[runtime] Force internalize names used before lookup in in DescriptorArray and TransitionArray

src/json-parser.h

Index: src/json-parser.h
diff --git a/src/json-parser.h b/src/json-parser.h
index 5944428104a3c9028d87f4561d08b8cce42c4ae5..efd3c04b98f7e323a79076e5672df745c9611810 100644
--- a/src/json-parser.h
+++ b/src/json-parser.h
@@ -128,7 +128,9 @@ class JsonParser BASE_EMBEDDED {
   }
 
   Handle<String> ParseJsonInternalizedString() {
-    return ScanJsonString<true>();
+    Handle<String> result = ScanJsonString<true>();
+    if (result.is_null()) return result;
+    return factory()->InternalizeString(result);
   }
 
   template <bool is_internalized>