[runtime] Avoid @@isConcatSpreadable lookup for fast path Array.prototype.concat

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index a6b3edef56f8953d69dbf16602ad6a03bedee366..845344f347042a75fb909273cbf49233de3af8ca 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -1523,7 +1523,6 @@ bool Object::SameValueZero(Object* other) {
 
 MaybeHandle<Object> Object::ArraySpeciesConstructor(
     Isolate* isolate, Handle<Object> original_array) {
-  Handle<Context> native_context = isolate->native_context();
   Handle<Object> default_species = isolate->array_function();
   if (!FLAG_harmony_species) {
     return default_species;
@@ -1548,7 +1547,7 @@ MaybeHandle<Object> Object::ArraySpeciesConstructor(
           isolate, constructor_context,
           JSReceiver::GetFunctionRealm(Handle<JSReceiver>::cast(constructor)),
           Object);
-      if (*constructor_context != *native_context &&
+      if (*constructor_context != *isolate->native_context() &&
           *constructor == constructor_context->array_function()) {
         constructor = isolate->factory()->undefined_value();
       }