tools: update V8 gypfiles for 9.1

PR-URL: #38273
Backport-PR-URL: #38991
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Mary Marchini <oss@mmarchini.me>

configure.py

@@ -1379,6 +1379,7 @@ def configure_library(lib, output, pkgname=None):
 
 
 def configure_v8(o):
+  o['variables']['v8_enable_webassembly'] = 1
   o['variables']['v8_enable_lite_mode'] = 1 if options.v8_lite_mode else 0
   o['variables']['v8_enable_gdbjit'] = 1 if options.gdb else 0
   o['variables']['v8_no_strict_aliasing'] = 1  # Work around compiler bugs.