As I was cleaning up the pinned message modal, I noticed several things not working properly with this modal.
- If you unpinned a message from within the modal, the title of the modal would not update to reflect the correct number of pinned messages in the chat
- If there were no pinned messages in the modal, there was no text/output to indicate to the user that the list was empty
Linear task: https://linear.app/comm/issue/ENG-5945/fix-up-pinned-messages-modal
Depends on D10347