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

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index b0f03e00f56cb4df6f8cb6c3f07be5c37fee0557..0a1f1bd60417d4bafa30215dfb25d6816cdd41be 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -182,7 +182,9 @@ namespace internal {
   V(FixedArray, detached_contexts, DetachedContexts)                           \
   V(ArrayList, retained_maps, RetainedMaps)                                    \
   V(WeakHashTable, weak_object_to_code_table, WeakObjectToCodeTable)           \
-  V(PropertyCell, array_protector, ArrayProtector)                             \
+  V(PropertyCell, array_elements_protector, ArrayElementsProtector)            \
+  V(PropertyCell, array_is_concat_spreadable_protector,                        \
+    ArrayIsConcatSpreadableProtector)                                          \
   V(PropertyCell, empty_property_cell, EmptyPropertyCell)                      \
   V(Object, weak_stack_trace_list, WeakStackTraceList)                         \
   V(Object, code_stub_context, CodeStubContext)                                \