Bug: Opening the MathLive keyboard causes input to lose focus

[Mathias-S]

1. Focus the MathLive field.
2. Then click the keyboard button using the mouse.
3. Click any of the keys in the MathLive keyboard. Nothing will happen until the user manually focuses the MathLive field again.

See video below where I first enter "123" using my own keyboard, then try to enter "456" using the MathLive keyboard.

Screen.Recording.2026-02-16.at.10.20.41.mov

Tested on Chrome 144 and Firefox 147 on macOS 26.3 and Edge 144 on Windows 11. The bug is also reproducible on touch screens, i.e. clicking the keyboard button multiple times to first close it then open it again (tested with iOS Safari 26.2).

[mgreminger]

@arnog just a heads up that #2946 fixes this issue