Fix issue of Idle displayed after pausing and resuming the app.

matrix-sdk-android-flow/src/main/java/org/matrix/android/sdk/flow/FlowSession.kt

@@ -80,6 +80,9 @@ class FlowSession(private val session: Session) {
 
     fun liveSyncState(): Flow<SyncState> {
         return session.syncService().getSyncStateLive().asFlow()
+                .startWith(session.coroutineDispatchers.io) {
+                    session.syncService().getSyncState()
+                }
     }
 
     fun livePushers(): Flow<List<Pusher>> {