Fix: Space scope header overflow (#11933)
* fix spacing for scope header
* extract scope header into component, apply line clamp
* update ThirdPartyMemberInfo styles
* pass onClose to ThirdPartyRoomMemberInfo
* rethemendex
* add View3pidInvite to actions enum, replace uses
* extract out action handler
* push card instead, test
* comment
* reinstate data-testid
* fix typo in styles
