TF-866: add dispose worker

lib/features/identity_creator/presentation/identity_creator_controller.dart

@@ -101,6 +101,7 @@ class IdentityCreatorController extends BaseController {
     inputNameIdentityFocusNode.dispose();
     inputNameIdentityController.dispose();
     inputBccIdentityController.dispose();
+    identityCreatorIsActiveWorker.dispose();
     super.onClose();
   }
 

lib/features/rules_filter_creator/presentation/rules_filter_creator_controller.dart

@@ -90,6 +90,7 @@ class RulesFilterCreatorController extends BaseMailboxController {
     inputRuleConditionFocusNode.dispose();
     inputRuleNameController.dispose();
     inputConditionValueController.dispose();
+    rulesFilterCreatorIsActiveWorker.dispose();
     super.onClose();
   }