fix: edit categories after uploading

🐞 Bug Report

Summary:
Unable to edit categories in profile contribution details when in Edit mode.

Steps to Reproduce:
1. Go to `/myprofile` (or your profile page).
2. Open any contribution (for example, an audio item) to open the details modal.
3. Click `Edit`.
4. Scroll to the Information section.
5. See that category values are not editable.

Expected Behavior:
Categories should be editable in Edit mode, and updated categories should be saved when clicking `Save`.

Actual Behavior:
Categories are only shown as read-only tags in view mode. In Edit mode, category selection UI is missing, so categories cannot be changed.

Screenshots/Logs:
Attached screenshots show:
- Categories visible in read-only mode.
- No category input/selector shown after clicking `Edit`.
No explicit error message appears in UI.

Environment:
Operating System: Linux (Ubuntu)
Browser: Chrome

Additional context:
This blocks users from correcting incorrect category assignments from their profile contribution modal.