[dialog] In Safari, focus isn't returned to the trigger when dialog is closed

[vladmoroz]

Steps to reproduce

Link to live example: https://master--base-ui.netlify.app/components/react-dialog/

Current behavior

Focus is returned to the start of the document, apparently

Expected behavior

Focus is returned to the trigger

Context

No response

Your environment

Safari 17.6

npx @mui/envinfo

``` Don't forget to mention which browser you used. Output from `npx @mui/envinfo` goes here. ```

Search keywords: safari, focus, return, trigger, close, dialog, modal

[atomiks]

@michaldudak this problem is caused by Safari not focusing buttons on mousedown, so the previously focused element isn't the trigger.

When using useClick from Floating UI, this problem is solved, but custom event handlers won't work.

Possible solutions:

• Swap to the useClick hook
• Add the custom click mouse event to context.dataRef.current.openEvent (that's what the focus manager checks for)
• Return focus manually for Safari

I don't think switching to useButton and rendering a <div> (which might take focus instead) will be reliable since they compose a native <button> tag in theory.