🐛 disallowed inactive users from being made owner

[vikaspotluri123]

• closes Should not be possible to transfer ownership to a suspended user #10555
• Added a check to the user modal that the new owner is active
• Had to refactor Owner->Author unit test (also renamed it)
  • Based on the first 2 lines, owner->editor change is attempted (hence the rename)
  • Since both stubs return a 'modal' with owner role which means owner->owner change is actually attempted
  • Now that there's a user status check, added the status property to the user receiving owernship