[stable28] fix(screenshare): fix missing screenshare button

[backportbot]

• Backport of chore(screenshare): get rid of duplicated properties #11720
• Partial backport of Feat(screensharing): switch focus to screenshare button instead of end call button #11582
• Fix Error with displaying the screen demonstration button #9725

Came back with the recent vue-lib updates:

For now, splitting NcActions into NcActions + NcButton helps on main, but need to take a look into focus trap error, as it affects every single component

[Antreesy]

cc @ShGKme for manual backport changes and vue-lib bug awareness

[ShGKme]

• Partial backport of Feat(screensharing): switch focus to screenshare button instead of end call button #11582

Am I missing something? I don't see any changes from that PR in this backport

[Antreesy]

I don't see any changes from that PR in this backport

There is a splitted NcButton

[nickvergessen]

Should release this for 28, right?