[Lite] Enable interpreted regexp for Lite mode.

BUG=v8:8293

Change-Id: Ic2424d55ad04f5a92953c2c6d639ed8178a628b4
Reviewed-on: https://chromium-review.googlesource.com/c/1373779Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58246}

BUILD.gn

@@ -375,7 +375,7 @@ config("features") {
   if (v8_enable_v8_checks) {
     defines += [ "V8_ENABLE_CHECKS" ]
   }
-  if (v8_interpreted_regexp) {
+  if (v8_interpreted_regexp || v8_enable_lite_mode) {
     defines += [ "V8_INTERPRETED_REGEXP" ]
   }
   if (v8_deprecation_warnings) {