show message when there is error in submit or remove approvals

lib/view_models/liked_tenders_view_model.dart

@@ -55,6 +55,11 @@ class LikedTendersViewModel with ChangeNotifier {
     _homeViewModel.init();
   }
 
+  void clearApprovalErrorMessage() {
+    _errorMessage = null;
+    notifyListeners();
+  }
+
   Future<void> getLikedTenders({bool reset = false}) async {
     if (!reset && (isLoadingMore || !hasMore)) {
       return;
@@ -303,7 +308,7 @@ class LikedTendersViewModel with ChangeNotifier {
         approvalStatus = false;
         break;
     }
-
+    approvalStatus = false;
     _isSubmitApprovalLoading = false;
     notifyListeners();
   }
@@ -370,6 +375,7 @@ class LikedTendersViewModel with ChangeNotifier {
         break;
     }
 
+    approvalStatus = false;
     _isRejectApprovalLoading = false;
     notifyListeners();
   }