chore: correct typo in ADD_TO_PLAYLIST API endpoint URL

[Pcmhacker-piro]

Closes #1001

#### PR Description                                                                                                                                                                    
This PR resolves the 404 error encountered at runtime when adding a podcast to a playlist. The `ADD_TO_PLAYLIST` constant in `APIUtils.ts` had a typo where the URL path was defined as

add-podcast-form-playlist (using "form" instead of "to"). This has been corrected to add-podcast-to-playlist, which correctly matches the backend endpoint. All frontend test suites,
lints, and type-checks compile and pass successfully.

#### Type of Change                                                                                                                                                                    
- [x] Bug fix (change which fixes an issue)                                                                                                                                            
- [ ] New feature (change which adds functionality)                                                                                                                                    
- [ ] Documentation update                                                                                                                                                             
                                                                                                                                                                                       
#### Select your work-area                                                                                                                                                             
- [x] Frontend                                                                                                                                                                         
- [ ] Backend                                                                                                                                                                          
- [ ] Documentation                                                                                                                                                                    
- [ ] Others                                                                                                                                                                           
                                                                                                                                                                                       
#### Related Issue                                                                                                                                                                     
https://github.com/SB2318/UltimateHealth/issues/1001                                                                                                                                   
                                                                                                                                                                                       
#### Add your Work Example                                                                                                                                                             
📷 *N/A (This is a backend endpoint URL typo fix)*                                                                                                                                     
                                                                                                                                                                                       
#### Fixes (mention the issue number which this fixes)                                                                                                                                 
Closes #1001                                                                                                                                                                           
                                                                                                                                                                                       
#### Checklist                                                                                                                                                                         
- [x] I have updated my branch and synced it with the project's 'develop' branch before making this PR.                                                                                
- [x] I have optimized the file changes.                                                                                                                                               
- [x] I have added a snapshot of my work example.                                                                                                                                      
- [x] I have made a PR to the project's develop branch.                                                                                                                                
                                                                                                                                                                                       
#### Undertaking                                                                                                                                                                       
- [x] My code follows the style guidelines of this project.                                                                                                                            
- [x] I have performed a self-review of my code.                                                                                                                                       
- [x] I have commented my code, particularly in hard-to-understand areas.                                                                                                              
- [x] I have made corresponding changes to the documentation.                                                                                                                          
- [x] I have checked for plagiarism and assure its authenticity.                                                                                                                       
- [x] I have read and followed the code of conduct for this repository. I understand that violation of this undertaking may have legal consequences.                                   

Sources:
▸ docs.diagho.com · https://docs.diagho.com/development/workflow/

[github-actions]

Thank you @, for creating the PR and contributing to our UltimateHealth project 💗.
Our team will review the PR and will reach out to you soon! 😇
Make sure that you have marked all the tasks that you are done with ✅.
Thank you for your patience! 😀

[Pcmhacker-piro]

heyy @SB2318
i fixed the assign issue so pls check it

[SB2318]

🔴 Major Concern: Scope Creep

• Yarn → pnpm migration
• CI/CD workflow modifications
• Removal of multiple components, hooks, and utilities
• Export structure refactoring
• Styling-related file deletions

These changes significantly increase review complexity and risk. Please split the feature implementation from the refactor/migration work into separate PRs.

The feature itself looks good; the primary concern is the amount of unrelated changes included in the same PR.

[Pcmhacker-piro]

heyy @SB2318
i fixed the assign issue so pls check this

[Pcmhacker-piro]

heyy @SB2318
i fixed the issue so pls check this