hotfix: call reload inside SettingsProvider.ensureInitialized if sing…

…leton was already initialized

* In some cases, Dart VM may still be alive in background & may still keep old snoozedUntil value, causing notification to show when it actually should not.
* Having this call present causes value to be updated again from hive database, once likely updated from notification snooze buttons.

lib/providers/settings_provider.dart

@@ -107,6 +107,7 @@ class SettingsProvider extends ChangeNotifier {
       debugPrint(exception.toString());
       debugPrint(stacktrace.toString());
     }
+    await instance.reload();
     return instance;
   }