test(texture): enable mipmap bind-to-mipmapped-array test on Linux with image support

[prihosur-amd]

Associated JIRA ticket number/Github issue number

AILIKFD-9
https://amd-hub.atlassian.net/browse/AILIKFD-9

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update
• Continuous Integration

What were the changes?

• Updated mipmap texture bind test guards to allow Linux execution when image support is available.
• Replaced Windows-only compile-time checks with !__HIP_NO_IMAGE_SUPPORT in hipBindTextureToMipmappedArray.cc.
• Updated negative-parameter test guard in the same file to include Linux (_WIN32 || __linux__).

Why are these changes needed?

• Mipmap functionality is supported on Linux and Windows when image support is enabled.
• Existing Windows-only guards prevented Linux coverage for this test path.
• This change aligns test coverage with actual platform support and improves APU/Linux validation.

Updated CHANGELOG?

• Yes
• No, Does not apply to this PR.

Added/Updated documentation?

• Yes
• No, Does not apply to this PR.

Additional Checks

• I have added tests relevant to the introduced functionality, and the unit tests are passing locally.
• Any dependent changes have been merged.