[Intl] fix Intl.Locale subclassing bug

Bug: v8:8259
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I52e1f23453cb9c0010645b7b71b09d0643765d28
Reviewed-on: https://chromium-review.googlesource.com/c/1269042Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56457}

src/objects.cc

@@ -12988,6 +12988,7 @@ bool CanSubclassHaveInobjectProperties(InstanceType instance_type) {
     case JS_INTL_COLLATOR_TYPE:
     case JS_INTL_DATE_TIME_FORMAT_TYPE:
     case JS_INTL_LIST_FORMAT_TYPE:
+    case JS_INTL_LOCALE_TYPE:
     case JS_INTL_NUMBER_FORMAT_TYPE:
     case JS_INTL_PLURAL_RULES_TYPE:
     case JS_INTL_RELATIVE_TIME_FORMAT_TYPE:

test/test262/test262.status

@@ -569,9 +569,6 @@
   # https://bugs.chromium.org/p/v8/issues/detail?id=8262
   'intl402/Locale/constructor-parse-twice': [FAIL],
 
-  # https://bugs.chromium.org/p/v8/issues/detail?id=8259
-  'intl402/Locale/subclassing': [SKIP],
-
   # https://bugs.chromium.org/p/v8/issues/detail?id=8246
   'intl402/Locale/constructor-tag': [FAIL],