heap: Actually attach allocation tracker

Bug: v8:12616, v8:12615
Change-Id: I57ce784c4c9b7a9d75a6e139063b7ce0cac511ab
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3452024Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79033}

src/heap/heap.cc

@@ -721,14 +721,16 @@ class Heap::AllocationTrackerForDebugging final
  public:
   static bool IsNeeded() {
     return FLAG_verify_predictable || FLAG_fuzzer_gc_analysis ||
-           FLAG_trace_allocation_stack_interval;
+           (FLAG_trace_allocation_stack_interval > 0);
   }
 
   explicit AllocationTrackerForDebugging(Heap* heap) : heap_(heap) {
     CHECK(IsNeeded());
+    heap_->AddHeapObjectAllocationTracker(this);
   }
 
   ~AllocationTrackerForDebugging() final {
+    heap_->RemoveHeapObjectAllocationTracker(this);
     if (FLAG_verify_predictable || FLAG_fuzzer_gc_analysis) {
       PrintAllocationsHash();
     }