feat(NcPopover): auto return focus to trigger button on close

[ShGKme]

☑️ Resolves

• Fix [NcEmojiPicker] is losing focus after close #5141

🖼️ Screenshots

🏚️ Before	🏡 After
B	A

🚧 Tasks

• Automatically find a button inside the NcPopover trigger and use it as fallback for setReturnFocus
• Add noAutoReturnFocus to optionally disable this behavior
  • Useful when there is a custom focus control, like in NcActions
• Adjust NcActions

🏁 Checklist

• ⛑️ Tests are included or are not applicable
• 📘 Component documentation has been extended, updated or is not applicable

[susnux]

Rebased onto stable8.
Tested it and the EmojiPicker bug is resolved with this 🚀

[susnux]

/backport to main

[ShGKme]

Tested it and the EmojiPicker bug is resolved with this 🚀

I don't remember why I did it, and I'm almost sure it was fixed another way around 🙈

[susnux]

@ShGKme yes with #6655

But this solution here is more generic. Please decide yourself if you think we need this feature here or close otherwise :)

[ShGKme]

🤨

[ShGKme]

@Antreesy @susnux Did you approve/merge it to fix some specific bug?

[ShGKme]

Or @AndyScherzinger as you pushed something

[Antreesy]

I didn't check the dates, thought it's just rebased