fix unrelated bug: invite sorting order wasn't stable in left panel

as the timestamp is the same when you receive the invite during your
first sync

src/domain/session/leftpanel/InviteTileViewModel.js

@@ -39,6 +39,10 @@ export class InviteTileViewModel extends BaseTileViewModel {
         if (parentComparison !== 0) {
             return parentComparison;
         }
-        return other._invite.timestamp - this._invite.timestamp;
+        const timeDiff = other._invite.timestamp - this._invite.timestamp;
+        if (timeDiff !== 0) {
+            return timeDiff;
+        }
+        return this._invite.id < other._invite.id ? -1 : 1;
     }
 }

src/matrix/room/create.ts

@@ -194,7 +194,8 @@ export class RoomBeingCreated extends EventEmitter<{change: never}> {
     get name() { return this._calculatedName; }
     get isBeingCreated(): boolean { return true; }
     get error(): Error | undefined { return this._error; }
-
+    get id() { return this.localId; }
+    
     cancel() {
         // TODO: remove from collection somehow
     }