fix: missing reactivity when creating a federated room (RocketChat#37007)

Author: juliajforesti

.changeset/pink-pens-march.md

@@ -0,0 +1,5 @@
+---
+'@rocket.chat/meteor': patch
+---
+
+Fixes reactivity when creating a federated room, that was wrongly showing Join button on composer, requiring a reload or change of route to be able to send a message.

apps/meteor/app/lib/server/functions/createRoom.ts

@@ -53,6 +53,7 @@ async function createUsersSubscriptions({
 		await syncRoomRolePriorityForUserAndRoom(owner._id, room._id, ['owner']);
 
 		if (insertedId) {
+			await notifyOnSubscriptionChangedById(insertedId, 'inserted');
 			await notifyOnRoomChanged(room, 'inserted');
 		}