Fixes room list not getting updated when not in focus

vector/src/main/java/im/vector/app/features/home/room/list/home/HomeRoomListFragment.kt

@@ -152,10 +152,10 @@ class HomeRoomListFragment :
             headersController.submitData(it)
         }
 
-        roomListViewModel.onEach(HomeRoomListViewState::roomsLivePagedList) { roomsListLive ->
-            roomsListLive?.observe(viewLifecycleOwner) { roomsList ->
-                roomsController.submitList(roomsList)
-                if (roomsList.isEmpty()) {
+        roomListViewModel.onEach(HomeRoomListViewState::roomsLivePagedList) { roomsList ->
+            roomsList?.let {
+                roomsController.submitList(it)
+                if (it.isEmpty()) {
                     roomsController.requestForcedModelBuild()
                 }
             }

vector/src/main/java/im/vector/app/features/home/room/list/home/HomeRoomListViewModel.kt

@@ -17,6 +17,7 @@
 package im.vector.app.features.home.room.list.home
 
 import android.widget.ImageView
+import androidx.lifecycle.asFlow
 import androidx.paging.PagedList
 import arrow.core.Option
 import arrow.core.toOption
@@ -43,6 +44,7 @@ import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onEach
@@ -254,7 +256,13 @@ class HomeRoomListViewModel @AssistedInject constructor(
                 .also { roomsFlow = it }
                 .launchIn(viewModelScope)
 
-        setState { copy(roomsLivePagedList = liveResults.livePagedList) }
+        liveResults.livePagedList
+                .asFlow()
+                .onEach {
+                    setState { copy(roomsLivePagedList = it) }
+                }
+                .flowOn(Dispatchers.Default)
+                .launchIn(viewModelScope)
     }
 
     private fun observeOrderPreferences() {

vector/src/main/java/im/vector/app/features/home/room/list/home/HomeRoomListViewState.kt

@@ -16,7 +16,6 @@
 
 package im.vector.app.features.home.room.list.home
 
-import androidx.lifecycle.LiveData
 import androidx.paging.PagedList
 import com.airbnb.mvrx.MavericksState
 import im.vector.app.core.platform.StateView
@@ -26,5 +25,5 @@ import org.matrix.android.sdk.api.session.room.model.RoomSummary
 data class HomeRoomListViewState(
         val state: StateView.State = StateView.State.Content,
         val headersData: RoomsHeadersData = RoomsHeadersData(),
-        val roomsLivePagedList: LiveData<PagedList<RoomSummary>>? = null,
+        val roomsLivePagedList: PagedList<RoomSummary>? = null,
 ) : MavericksState