docs: Add docs for `hover_popover_delay` and update hover delay (#30620)

- Add docs for `hover_popover_delay`.
- Set `hover_popover_delay` to `300` from `350` which matches [VSCode's
hover
delay](https://github.com/microsoft/vscode/blob/ed48873ba23ae0a06a0eafb328ca1ce62b7d4b72/src/vs/editor/common/config/editorOptions.ts#L2219).

Release Notes:

- Added `hover_popover_delay` to settings which determines time to wait
in milliseconds before showing the informational hover box.
7eb226b3fcSmit Barmase committed on 5/13/2025, 10:52:28 AM· committed by GitHubparent9426caa
3 files changedLine totals unavailable