[heap] Skip iterator check in HeapObjectIterator when using TPH

Bug: v8:11641
Change-Id: I8138b8bfca661749cd73fcaca759c2a854fc1ada
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2870205
Auto-Submit: Wenyu Zhao <wenyu.zhao@anu.edu.au>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74348}

src/heap/heap.cc

@@ -6260,7 +6260,7 @@ HeapObjectIterator::~HeapObjectIterator() {
 #ifdef DEBUG
   // Assert that in filtering mode we have iterated through all
   // objects. Otherwise, heap will be left in an inconsistent state.
-  if (filtering_ != kNoFiltering) {
+  if (!V8_ENABLE_THIRD_PARTY_HEAP_BOOL && filtering_ != kNoFiltering) {
     DCHECK_NULL(object_iterator_);
   }
 #endif