* Notify about unsaved changes
* Move system message components and types to shared folder
* Add system messages component
GitOrigin-RevId: ab81a24888847bd9a8a390fd1af6b58f471f7a4b
* Add type for externalUpdate
* Log clientTracking.getConnectedUsers error
* Remove update debugging code
* Use ErrorMetadata type
* Use Message type
* Remove unused document:opened event
GitOrigin-RevId: 3a1d1e785dca37d6b91cd650fbcb4e5decb6343b