feat: show ui for inherited default field values

[tomwwinter]

see #2217

Remaining Tasks

• [x] UI only visible if the localAttribute (parent ref) field isArray
• [x] boolean inherited shows as "manually overwritten" if false is inherited from parent
• [ ] clear values after removing entity-ref to parent? (works if parent is single value, but not if parent-ref isArray)

UX considerations

• [ ] show inheritance icon more often?
  • [ ] also on disabled form to indicate the link?
  • [ ] also while "parent" is not selected, to indicate in edit mode that it can be inherited?
• [ ] indicate when inheritance not possible (multiple parents selected)
• [ ] more speaking icon?
• [x] label instead of id in hint