feat: analytics typed events

[criticalAY]

Note

Assisted-by: Claude Opus 5 (few commits)

Purpose / Description

We were passing raw strings for category and action, so nothing stopped a variable from landing in a field that is compared between AnkiDroid versions, and nothing enforced that a category and action actually belong together. So here enforcing the runtime data

Fixes

• Fixes Use typed analytics events #21525

Approach

See commits

How Has This Been Tested?

Locally build and unit testing

Learning (optional, can help others)

NA

Checklist

Please, go through these checks before submitting the PR.

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner