Fix excessive querying (again)

app/src/main/java/org/tasks/ui/TaskListViewModel.kt

@@ -16,10 +16,10 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.map
-import kotlinx.coroutines.flow.mapNotNull
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
@@ -110,20 +110,17 @@ class TaskListViewModel @Inject constructor(
         localBroadcastManager.registerRefreshReceiver(refreshReceiver)
 
         _state
-            .mapNotNull { state -> state.filter?.let { it to state.searchQuery } }
+            .filter { it.filter != null }
+            .map { it.copy(tasks = TasksResults.Loading) }
             .distinctUntilChanged()
             .throttleLatest(333)
-            .map { (filter, searchQuery) ->
-                taskDao.fetchTasks {
-                    getQuery(
-                        preferences = preferences,
-                        filter = when {
-                            searchQuery == null -> filter
-                            searchQuery.isBlank() -> BuiltInFilterExposer.getMyTasksFilter(context.resources)
-                            else -> context.createSearchQuery(searchQuery)
-                        }
-                    )
+            .map {
+                val filter = when {
+                    it.searchQuery == null -> it.filter!!
+                    it.searchQuery.isBlank() -> BuiltInFilterExposer.getMyTasksFilter(context.resources)
+                    else -> context.createSearchQuery(it.searchQuery)
                 }
+                taskDao.fetchTasks { getQuery(preferences, filter) }
             }
             .onEach { tasks ->
                 _state.update {