debugger: Tidy up dropdown menus (#30679)

Before
![CleanShot 2025-05-14 at 13 22
44@2x](https://github.com/user-attachments/assets/c6c06c5c-571d-4913-a691-161f44bba27c)

After
![CleanShot 2025-05-14 at 13 22
17@2x](https://github.com/user-attachments/assets/0a25a053-81a3-4b96-8963-4b770b1e5b45)

Release Notes:

- N/A
dce6e96c16Nate Butler committed on 5/14/2025, 11:32:51 AM· committed by GitHubparent4280bff
6 files changedLine totals unavailable