feat(h-grid): hide return fields select/combo in advanced filtering

Author: igdmdimitrov

projects/igniteui-angular/src/lib/query-builder/query-builder-tree.component.html

@@ -29,7 +29,9 @@
         </div>
 
         <div class="igx-filter-tree__inputs-field">
-            <span class="igx-query-builder__label">Select</span>
+            @if (!this.isHierarchicalGridNestedQuery()) {
+                <span class="igx-query-builder__label">Select</span>
+            }
             @if (!parentExpression) {
                 <igx-combo
                     #returnFieldsCombo
@@ -67,7 +69,7 @@
                     </ng-template>
                 </igx-combo>
             }
-            @else {
+            @else if (!this.isAdvancedFiltering() && !this.isHierarchicalGridNestedQuery()) {
                 <igx-select #returnFieldSelect
                     type="box"
                     (selectionChanging)="onReturnFieldSelectChanging($event)"

projects/igniteui-angular/src/lib/query-builder/query-builder-tree.component.ts

@@ -524,6 +524,11 @@ export class IgxQueryBuilderTreeComponent implements AfterViewInit, OnDestroy {
         return this.entities?.length === 1 && !this.entities[0]?.name;
     }
 
+    /** @hidden */
+    protected isHierarchicalGridNestedQuery(): boolean {
+        return this.queryBuilder.entities !== this.entities
+    }
+
     /** @hidden */
     protected isSearchValueInputDisabled(): boolean {
         return !this.selectedField ||