[compiler] Use MakeRefAssumeMemoryFence around closure initial map

The field in JSFunction uses acquire-release semantics, therefore
the read is store-ordered.

Bug: v8:7790, v8:12282
Change-Id: Ic6e9d02e7aca1ca68c74502c3afed6eb6e964975
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3201992Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77218}

src/compiler/property-access-builder.cc

@@ -168,7 +168,9 @@ base::Optional<Node*> PropertyAccessBuilder::FoldLoadDictPrototypeConstant(
           Map::GetConstructorFunction(
               *map_handle, *broker()->target_native_context().object())
               .value();
-      map = MakeRef(broker(), constructor.initial_map());
+      // {constructor.initial_map()} is loaded/stored with acquire-release
+      // semantics for constructors.
+      map = MakeRefAssumeMemoryFence(broker(), constructor.initial_map());
       DCHECK(map.object()->IsJSObjectMap());
     }
     dependencies()->DependOnConstantInDictionaryPrototypeChain(