Setting Grid visibility back to 1 after increasing Grid size using keyboard shortcuts leaves the Grid invisible in Scene View

Steps to reproduce:
1. Create new Unity project
2. Focus Scene view
3. Press and hold command+] or ctrl+] to increase Grid Size
4. Once “Toggle the visibility of the grid” field shows “—“ set it back to 1  
5. Observe the Grid in the Scene view

Actual results: Grid is not visible when setting Grid visibility back to 1 in Scene view
Expected results: Grid is visible when settings Grid visibility back to 1 in Scene view

Reproducible with versions: 6000.0.67f1, 6000.3.9f1, 6000.4.0b9, 6000.5.0a7

Tested on (OS): Ubuntu 24.04, macOS Silicon Tahoe 26.2 (M1)