provider lifecycle hardenings

apps/weblibre/lib/features/geckoview/features/readerview/presentation/controllers/readerable.dart

@@ -34,7 +34,15 @@ class ReaderableScreenController extends _$ReaderableScreenController {
     final eventChange = ref.read(eventServiceProvider).readerableEvents.first;
     final toggle = _service.toggleReaderView(enable);
 
-    state = await AsyncValue.guard(() => Future.wait([toggle, eventChange]));
+    final result = await AsyncValue.guard(
+      () => Future.wait([toggle, eventChange]),
+    );
+
+    if (!ref.mounted) {
+      return;
+    }
+
+    state = result;
   }
 
   @override

apps/weblibre/lib/features/geckoview/features/readerview/presentation/controllers/readerable.g.dart

@@ -35,7 +35,7 @@ final class ReaderableScreenControllerProvider
 }
 
 String _$readerableScreenControllerHash() =>
-    r'62b2167ff8f9fe21c3cf3339e135a50aa684160c';
+    r'46206cfb431c5d36dc6351a8fc52c3b98b86dd0f';
 
 abstract class _$ReaderableScreenController extends $AsyncNotifier<void> {
   FutureOr<void> build();