[compiler] Skip IsPendingAllocation check in Ref construction

This temporarily reverts the key part of
https://chromium-review.googlesource.com/c/v8/v8/+/2886861
in order to unblock the roll.

Bug: v8:7790, chromium:1209798
Change-Id: I10a02bdb2f1a0e0a2b1238481dc39a1d975ee5b2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2896983Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74611}

src/compiler/heap-refs.cc

@@ -2775,12 +2775,6 @@ ObjectData* JSHeapBroker::TryGetOrCreateData(Handle<Object> object,
   DCHECK(!object->IsSmi());
 
   const bool crash_on_error = (flags & kCrashOnError) != 0;
-  if ((flags & kAssumeMemoryFence) == 0 &&
-      ObjectMayBeUninitialized(HeapObject::cast(*object))) {
-    TRACE_BROKER_MISSING(this, "Object may be uninitialized " << *object);
-    CHECK_WITH_MSG(!crash_on_error, "Ref construction failed");
-    return nullptr;
-  }
 
   if (IsReadOnlyHeapObjectForCompiler(HeapObject::cast(*object))) {
     entry = refs_->LookupOrInsert(object.address());