🐛 Fix dozens bugs

lib/pods/paging.dart

@@ -39,7 +39,7 @@ mixin AsyncPaginationController<T> on AsyncNotifier<List<T>>
   Future<void> refresh() async {
     totalCount = null;
     fetchedCount = 0;
-    state = AsyncLoading<List<T>>();
+    state = AsyncData<List<T>>([]);
 
     final newState = await AsyncValue.guard<List<T>>(() async {
       return await fetch();
@@ -74,7 +74,7 @@ mixin AsyncPaginationFilter<F, T> on AsyncPaginationController<T>
     fetchedCount = 0;
     currentFilter = filter;
 
-    state = AsyncLoading<List<T>>();
+    state = AsyncData<List<T>>([]);
 
     final newState = await AsyncValue.guard<List<T>>(() async {
       return await fetch();

lib/pods/timeline.dart

@@ -23,11 +23,7 @@ class ActivityListNotifier extends AsyncNotifier<List<SnTimelineEvent>>
     final client = ref.read(apiClientProvider);
 
     final cursor =
-        state.isLoading
-            ? null
-            : state.valueOrNull?.lastOrNull?.createdAt
-                .toUtc()
-                .toIso8601String();
+        state.valueOrNull?.lastOrNull?.createdAt.toUtc().toIso8601String();
 
     final queryParameters = {
       if (cursor != null) 'cursor': cursor,