[turbofan] Properly type field access to stable heap object maps.

src/compiler/access-builder.cc

Index: src/compiler/access-builder.cc
diff --git a/src/compiler/access-builder.cc b/src/compiler/access-builder.cc
index 76e8b0688e644f843c4d181c1daed944b826bd3a..b4e234427cf19785a3f9640427a21e6c98ba902f 100644
--- a/src/compiler/access-builder.cc
+++ b/src/compiler/access-builder.cc
@@ -12,7 +12,7 @@ namespace compiler {
 // static
 FieldAccess AccessBuilder::ForMap() {
   FieldAccess access = {kTaggedBase, HeapObject::kMapOffset,
-                        MaybeHandle<Name>(), Type::Any(), kMachAnyTagged};
+                        MaybeHandle<Name>(), Type::Internal(), kMachAnyTagged};
   return access;
 }