fix: primefaces#14503, p-dropdown: selecting an option or clearing th…

…e value should clear the filter input

src/app/components/dropdown/dropdown.ts

@@ -1737,6 +1737,7 @@ export class Dropdown implements OnInit, AfterViewInit, AfterContentInit, AfterV
         this.updateEditableLabel();
         this.onChange.emit({ originalEvent: event, value: this.value });
         this.onClear.emit(event);
+        this.resetFilter();
     }
 }