fix: User updates are not synced between clients (#6490)

* Add Model.changeset method to get minified changes since last update

* fix: Handle arrays

* Add changes column, types

* test

app/components/WebsocketProvider.tsx

@@ -88,6 +88,7 @@ class WebsocketProvider extends React.Component<Props> {
       pins,
       stars,
       memberships,
+      users,
       userMemberships,
       policies,
       comments,
@@ -509,6 +510,10 @@ class WebsocketProvider extends React.Component<Props> {
       }
     );
 
+    this.socket.on("users.update", (event: PartialWithId<User>) => {
+      users.add(event);
+    });
+
     this.socket.on("users.demote", async (event: PartialWithId<User>) => {
       if (event.id === auth.user?.id) {
         documents.all.forEach((document) => policies.remove(document.id));