Fullscreen mode isn't responsive to rescaling

[DanFessler]

Expected Behavior

Fullscreen mode should fill the screen when the browser is resized
Proposed fix included in #9753

Actual Behavior

Fullscreen mode is determined when entered, but does not respond to browser rescaling

Steps to Reproduce

1. launch full screen mode
2. rescale the window

System Details

Chrome on Windows 11

Video

Recording.2024-11-27.230019.mp4