refactor: cleanup untracked in core (#60150)

Re-export untracked in core from primitives

PR Close #60150

packages/core/src/render3/reactivity/untracked.ts

@@ -6,19 +6,12 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import {setActiveConsumer} from '@angular/core/primitives/signals';
+import {untracked as untrackedPrimitive} from '@angular/core/primitives/signals';
 
 /**
  * Execute an arbitrary function in a non-reactive (non-tracking) context. The executed function
  * can, optionally, return a value.
  */
 export function untracked<T>(nonReactiveReadsFn: () => T): T {
-  const prevConsumer = setActiveConsumer(null);
-  // We are not trying to catch any particular errors here, just making sure that the consumers
-  // stack is restored in case of errors.
-  try {
-    return nonReactiveReadsFn();
-  } finally {
-    setActiveConsumer(prevConsumer);
-  }
+  return untrackedPrimitive(nonReactiveReadsFn);
 }