Use new API awaitRoomRemoteEcho to ensure that the room is ready SDK side.

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/RustMatrixClient.kt

@@ -272,6 +272,8 @@ class RustMatrixClient(
                 .filter(predicate)
                 .first()
                 .first()
+                // Ensure that the room is ready
+                .also { client.awaitRoomRemoteEcho(it.roomId.value) }
         }
     }
 
@@ -311,16 +313,14 @@ class RustMatrixClient(
                 avatar = createRoomParams.avatar,
                 powerLevelContentOverride = defaultRoomCreationPowerLevels,
             )
-            val roomId = client.createRoom(rustParams)
+            val roomId = RoomId(client.createRoom(rustParams))
             // Wait to receive the room back from the sync but do not returns failure if it fails.
             try {
-                withTimeout(30.seconds) {
-                    client.awaitRoomRemoteEcho(roomId)
-                }
+                awaitJoinedRoom(roomId.toRoomIdOrAlias(), 30.seconds)
             } catch (e: Exception) {
                 Timber.e(e, "Timeout waiting for the room to be available in the room list")
             }
-            RoomId(roomId)
+            roomId
         }
     }