[turbofan] Weaken a condition in ProcessHintsForPromiseResolve

... in order to be in sync with JSNativeContextSpecialization. This
probably doesn't allow any more optimizations but avoids confusing
misses in the broker trace.

Bug: v8:7790
Change-Id: Ia99a5828651468af8450028a351692482c21670c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1944155
Commit-Queue: Georg Neis <neis@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65293}

src/compiler/serializer-for-background-compilation.cc

@@ -2518,9 +2518,9 @@ void SerializerForBackgroundCompilation::ProcessHintsForPromiseResolve(
   };
 
   for (auto hint : resolution_hints.constants()) {
-    if (!hint->IsJSReceiver()) continue;
-    Handle<JSReceiver> receiver(Handle<JSReceiver>::cast(hint));
-    processMap(handle(receiver->map(), broker()->isolate()));
+    if (!hint->IsHeapObject()) continue;
+    Handle<HeapObject> resolution(Handle<HeapObject>::cast(hint));
+    processMap(handle(resolution->map(), broker()->isolate()));
   }
   for (auto map_hint : resolution_hints.maps()) {
     processMap(map_hint);