fix: Improve handling of max payload size

app/scenes/Document/components/MultiplayerEditor.tsx

@@ -36,7 +36,10 @@ type AwarenessChangeEvent = {
 
 type ConnectionStatusEvent = { status: ConnectionStatus };
 
-type MessageEvent = { message: string };
+type MessageEvent = {
+  message: string;
+  event: Event;
+};
 
 function MultiplayerEditor({ onSynced, ...props }: Props, ref: any) {
   const documentId = props.id;
@@ -138,6 +141,17 @@ function MultiplayerEditor({ onSynced, ...props }: Props, ref: any) {
       setRemoteSynced(true);
     });
 
+    provider.on("close", (ev: MessageEvent) => {
+      if ("code" in ev.event && ev.event.code === 1009) {
+        provider.shouldConnect = false;
+        showToast(
+          t(
+            "Sorry, this document is too large - edits will no longer be persisted."
+          )
+        );
+      }
+    });
+
     if (debug) {
       provider.on("close", (ev: MessageEvent) =>
         Logger.debug("collaboration", "close", ev)