[select] Reset typeahead on external blur

[antonfrolovsky]

Fixes #2608

Updated useTypeahead to handle onBlur so the typeahead session resets only when focus leaves the reference ↔ floating pair.

[pkg-pr-new]

• vite-css-base-ui-example

  pnpm add https://pkg.pr.new/mui/base-ui/@base-ui/react@2618
  

  pnpm add https://pkg.pr.new/mui/base-ui/@base-ui/utils@2618
  

commit: 5d8b12d

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[mui-bot]

Bundle size report

Bundle	Parsed size	Gzip size
@base-ui/react	🔺+286B(+0.07%)	🔺+76B(+0.06%)

Details of bundle changes

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[mj12albert]

Works great, thanks for the contribution @antonfrolovsky

[atomiks]

These should use shadow DOM contains util

[antonfrolovsky]

Okay, I'll check it out as soon as possible

[atomiks]

The solution here might be simpler given it works when it re-opens: #2608 (comment)

Maybe the resetting just needs to happen when selectedIndex === null as well as when it re-opens.

  useIsoLayoutEffect(() => {
    if (open) {
      timeout.clear();
      matchIndexRef.current = null;
      stringRef.current = '';
    }
  }, [open, timeout]);

[antonfrolovsky]

@atomiks Used the contains util in blur handling and added the selectedIndex === null check so typeahead resets when the selection clears.

[michaldudak]

I found one other issue with prevIndexRef not being initialized properly at the start of new typing session and I fixed it as it was a one-liner.
@atomiks, do you have any other remarks or can we merge it?

[michaldudak]

Thanks for your contribution, @antonfrolovsky!