Use entity_reference for target_id filter

entity_hierarchy.views.inc

@@ -198,6 +198,9 @@ function entity_hierarchy_field_views_data(FieldStorageConfigInterface $field_st
       'field table' => $table_mapping->getDedicatedDataTableName($field_storage),
       'field field' => $field_name . '_target_id',
     ];
+
+    // Change to use entity reference filter instead of numeric.
+    $data[$table_name]["{$field_name}_target_id"]['filter']['id'] = 'entity_reference';
   }
 
   return $data;

tests/src/Kernel/ViewsIntegrationTest.php

@@ -487,4 +487,12 @@ class ViewsIntegrationTest extends EntityHierarchyKernelTestBase {
     ]);
   }
 
+  /**
+   * Tests target_id filter uses core's entity_reference plugin.
+   */
+  public function testEntityReferenceFilterHandler(): void {
+    $data = \Drupal::service('views.views_data')->getAll();
+    $this->assertEquals('entity_reference', $data[$this->parent->getEntityTypeId() . '__parents']['parents_target_id']['filter']['id']);
+  }
+
 }