[Intl] Ship Intl.DisplayNames v2

Stage 3 proposal
Spec: https://tc39.es/intl-displaynames-v2/
R2T: https://groups.google.com/a/chromium.org/g/blink-dev/c/XOJE7zVlxnI/m/cnkuazxHAwAJ
I2S: https://groups.google.com/a/chromium.org/g/blink-dev/c/uld_YkbzL0Q/m/L7VjjNTDAQAJ
Design Doc: https://docs.google.com/document/d/17hQz4nOC7PJYhxc_MU-BRoT6BnYGZv66XlU1iGX0ywQ
LGTM1:bratell.d@gmail.com
LGTM2:chrishtr@chromium.org
LGTM3:tkent@chromium.org

Bug: v8:11637
Change-Id: I555c5425ff5ee5854a43608aa56ee5399651408a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3087976Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76330}

src/flags/flag-definitions.h

@@ -307,7 +307,6 @@ DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
 #define HARMONY_STAGED(V)                                 \
   HARMONY_STAGED_BASE(V)                                  \
   V(harmony_intl_best_fit_matcher, "Intl BestFitMatcher") \
-  V(harmony_intl_displaynames_v2, "Intl.DisplayNames v2") \
   V(harmony_intl_locale_info, "Intl locale info")         \
   V(harmony_intl_more_timezone,                           \
     "Extend Intl.DateTimeFormat timeZoneName Option")
@@ -327,9 +326,10 @@ DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
   V(harmony_class_static_blocks, "harmony static initializer blocks")
 
 #ifdef V8_INTL_SUPPORT
-#define HARMONY_SHIPPING(V)             \
-  HARMONY_SHIPPING_BASE(V)              \
-  V(harmony_intl_dateformat_day_period, \
+#define HARMONY_SHIPPING(V)                               \
+  HARMONY_SHIPPING_BASE(V)                                \
+  V(harmony_intl_displaynames_v2, "Intl.DisplayNames v2") \
+  V(harmony_intl_dateformat_day_period,                   \
     "Add dayPeriod option to DateTimeFormat")
 #else
 #define HARMONY_SHIPPING(V) HARMONY_SHIPPING_BASE(V)