Bug: No animation for exiting focus mode

### Expected
There should be a sliding animation when exiting focus mode (Option + Command + F)

### Observed
It snaps open without an animation.

### Reproduced
> 1. Go to any note.
> 2. Enter focus mode via `Option + Command + F`
> 3. Exit focus mode via `Option + Command + F`

https://github.com/user-attachments/assets/74067abc-62ea-494c-9f57-a73f48412ea7

Start by reproducing the issue in a note using Option + Command + F to enter and exit focus mode, then locate the macOS focus-mode implementation. Compare the enter and exit transitions and verify that exiting uses a sliding animation rather than snapping open. Done means the exit animation is visible and the reported reproduction steps no longer show the bug.

Written by the indexing model from the issue text.