Seekbar doesn't work with keyboard

### What Happened?

The seekbar position can't be updated via the keyboard

### Steps to Reproduce

1. be playing music
2. focus the seekbar
3. press left or right keys
4. seekbar snaps back to playing position

### Expected Behavior

Should be able to navigate the seekbar position with the keyboard

### OS Version

7.x (Early Access)

### Software Version

Compiled from git

### Log Output

_No response_

### Hardware Info

_No response_

Start by reproducing the reported behavior in the music player: play music, focus the seekbar, and press the left or right keys. Trace the seekbar interaction from that reproduction and verify that keyboard navigation changes its position without snapping back during playback.

Written by the indexing model from the issue text.