fix(material/tree): revert last commit

revert last commit

Fixes #21922

Author: DBowen33

src/cdk/tree/tree.ts

@@ -65,7 +65,7 @@ import {
   // The view for `CdkTree` consists entirely of templates declared in other views. As they are
   // declared elsewhere, they are checked when their declaration points are checked.
   // tslint:disable-next-line:validate-decorators
-  changeDetection: ChangeDetectionStrategy.OnPush,
+  changeDetection: ChangeDetectionStrategy.Default,
   standalone: true,
   imports: [CdkTreeNodeOutlet],
 })