[Intl] Stage Intl Number Format v3 API

Stage 3 proposal

flag --harmony-intl-number-format-v3

Spec: https://github.com/tc39/proposal-intl-numberformat-v3
R2T: https://groups.google.com/a/chromium.org/g/blink-dev/c/vy6rCuh3r_0/m/1Q2FHx9hBAAJ
Design Doc: https://docs.google.com/document/d/19jAogPBb6W4Samt8NWGZKu47iv0_KoQhBvLgQH3xvr8/edit
https://docs.google.com/document/d/14zxGub6Os6nARzH6XstOZX05w2537sZo_ZSSlGjGpBM/edit#heading=h.86ckkob9p59r
https://chromestatus.com/feature/5707621009981440

Bug: v8:10776
Change-Id: I81d0385b09c283628c7c36096d26e07a817888a1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3703471Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81198}

src/flags/flag-definitions.h

@@ -293,10 +293,9 @@ DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
   V(harmony_change_array_by_copy, "harmony change-Array-by-copy")
 
 #ifdef V8_INTL_SUPPORT
-#define HARMONY_INPROGRESS(V)                             \
-  HARMONY_INPROGRESS_BASE(V)                              \
-  V(harmony_intl_best_fit_matcher, "Intl BestFitMatcher") \
-  V(harmony_intl_number_format_v3, "Intl.NumberFormat v3")
+#define HARMONY_INPROGRESS(V) \
+  HARMONY_INPROGRESS_BASE(V)  \
+  V(harmony_intl_best_fit_matcher, "Intl BestFitMatcher")
 #else
 #define HARMONY_INPROGRESS(V) HARMONY_INPROGRESS_BASE(V)
 #endif
@@ -306,7 +305,9 @@ DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
   V(harmony_array_grouping, "harmony array grouping")
 
 #ifdef V8_INTL_SUPPORT
-#define HARMONY_STAGED(V) HARMONY_STAGED_BASE(V)
+#define HARMONY_STAGED(V) \
+  HARMONY_STAGED_BASE(V)  \
+  V(harmony_intl_number_format_v3, "Intl.NumberFormat v3")
 #else
 #define HARMONY_STAGED(V) HARMONY_STAGED_BASE(V)
 #endif

test/test262/test262.status

@@ -1940,6 +1940,7 @@
 
   'harness/temporalHelpers-one-shift-time-zone': [SKIP],
 
+  # https://github.com/tc39/test262/pull/3571
   'intl402/NumberFormat/test-option-roundingPriority-mixed-options': [FAIL],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=11660