[heap] Fix TPH heap object iterator

This CL ensures that the TPH object iterator is reset correctly before iteration.

Bug: v8:11641
Change-Id: I041890f8a1999f5d0d75af017744a5618550f28c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2849818Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74219}

src/heap/heap.cc

@@ -6154,13 +6154,14 @@ HeapObjectIterator::HeapObjectIterator(
       break;
   }
   object_iterator_ = space_iterator_->Next()->GetObjectIterator(heap_);
+  if (V8_ENABLE_THIRD_PARTY_HEAP_BOOL) heap_->tp_heap_->ResetIterator();
 }
 
 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
@@ -6177,6 +6178,7 @@ HeapObject HeapObjectIterator::Next() {
 }
 
 HeapObject HeapObjectIterator::NextObject() {
+  if (V8_ENABLE_THIRD_PARTY_HEAP_BOOL) return heap_->tp_heap_->NextObject();
   // No iterator means we are done.
   if (object_iterator_.get() == nullptr) return HeapObject();