build: use v8_use_metagen in build flags

Refs: https://chromium-review.googlesource.com/c/v8/v8/+/8524366
Signed-off-by: Joyee Cheung <joyeec9h3@gmail.com>

Author: joyeecheung

tools/v8_gypfiles/features.gypi

@@ -581,7 +581,7 @@
       'V8_TYPED_ARRAY_MAX_SIZE_IN_HEAP=<(v8_typed_array_max_size_in_heap)',
       # See deps/v8/src/objects/instance-types-gen.h and
       # https://github.com/nodejs/build/issues/4350
-      'V8_USE_METAGEN_INSTANCE_TYPES=0',
+      'V8_USE_METAGEN=0',
     ],  # defines
   },  # target_defaults
 }