Fix focus visibility for input components in site setup

[Abhishek-17h]

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Fixed missing visible focus for multiple select inputs across components using the SelectStyling widget in Site Setup. The fix ensures proper focus indication for accessibility across all instances of the widget.
Update snapshots to match new UI behavior.

Screenshots after Fix :

Previous behavior is provided in #6348

Closes #6348

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[Abhishek-17h]

@stevepiercy @sneridagh can you please provide review on this?

[stevepiercy]

Refs: #6504

[stevepiercy]

News looks good, with a minor tweak.

This needs review from the @plone/volto-accessibility Team, so I assigned them as reviewers.

I also have a question about the source of the colors that you chose.

This looks like a nice improvement. Thank you!

[stevepiercy]

Suggested change

	Fixed missing visible focus for multiple select inputs across components using the SelectStyling widget in Site Setup. The fix ensures proper focus indication for accessibility across all instances of the widget.@Abhishek-17h
	Added visible focus for multiple select inputs across components using the `SelectStyling` widget in Site Setup. The fix ensures proper focus indication for accessibility across all instances of the widget. @Abhishek-17h

[stevepiercy]

@Abhishek-17h out of curiosity, where did you get the colors in this PR? I know we're picky about being consistent with colors, especially to ensure sufficient contrast for accessibility. I don't know where we capture them all in a single place, like a style guide.

Hopefully someone from the @plone/volto-accessibility team can inform me. If this thing does not exist, it might be a good thing to add to our accessibility PLIP #6504.