add loading when using advance search

lib/features/mailbox_dashboard/presentation/controller/search_controller.dart

@@ -157,6 +157,8 @@ class SearchController extends BaseController {
   bool isSearchActive() =>
       searchState.value.searchStatus == SearchStatus.ACTIVE;
 
+  bool isAdvanceSearchActive() => isAdvancedSearchHasApply.isTrue;
+
   void enableSearch() {
     searchState.value = searchState.value.enableSearchState();
   }

lib/features/thread/presentation/thread_controller.dart

@@ -803,6 +803,9 @@ class ThreadController extends BaseController {
 
   bool isSearchActive() => searchController.isSearchActive();
 
+  bool isAdvanceSearchActive() => searchController.isAdvanceSearchActive();
+
+
   bool get isAllSearchInActive => !searchController.isSearchActive() &&
     searchController.isAdvancedSearchViewOpen.isFalse;
 

lib/features/thread/presentation/thread_view.dart

@@ -473,7 +473,7 @@ class ThreadView extends GetWidget<ThreadController> with AppLoaderMixin,
     return Obx(() => controller.viewState.value.fold(
       (failure) => const SizedBox.shrink(),
       (success) {
-        if (controller.isSearchActive()) {
+        if (controller.isSearchActive() || controller.isAdvanceSearchActive()) {
           return success is SearchingState
               ? Padding(padding: const EdgeInsets.symmetric(vertical: 16), child: loadingWidget)
               : const SizedBox.shrink();