Fixed #4646 - Add custom wrapper support for helper components

components/lib/columngroup/ColumnGroup.vue

@@ -4,6 +4,13 @@ import BaseColumnGroup from './BaseColumnGroup.vue';
 export default {
     name: 'ColumnGroup',
     extends: BaseColumnGroup,
+    inject: ['$columnGroups'],
+    mounted() {
+        this.$columnGroups?.add(this.$);
+    },
+    unmounted() {
+        this.$columnGroups?.delete(this.$);
+    },
     render() {
         return null;
     }