[Atomics.waitAsync] Ship Atomics.waitAsync

Bug: v8:10239
Change-Id: I3671d3bd5f4f6df1ca01237158b8f284b5e3d7ac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2410186Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69891}

src/flags/flag-definitions.h

@@ -235,8 +235,7 @@ DEFINE_IMPLICATION(harmony_weak_refs_with_cleanup_some, harmony_weak_refs)
 
 // Features that are complete (but still behind --harmony/es-staging flag).
 #define HARMONY_STAGED_BASE(V) \
-  V(harmony_top_level_await, "harmony top level await") \
-  V(harmony_atomics_waitasync, "harmony Atomics.waitAsync")
+  V(harmony_top_level_await, "harmony top level await")
 
 #ifdef V8_INTL_SUPPORT
 #define HARMONY_STAGED(V)               \
@@ -259,7 +258,8 @@ DEFINE_IMPLICATION(harmony_weak_refs_with_cleanup_some, harmony_weak_refs)
   V(harmony_private_methods, "harmony private methods in class literals") \
   V(harmony_weak_refs, "harmony weak references")                         \
   V(harmony_string_replaceall, "harmony String.prototype.replaceAll")     \
-  V(harmony_logical_assignment, "harmony logical assignment")
+  V(harmony_logical_assignment, "harmony logical assignment")             \
+  V(harmony_atomics_waitasync, "harmony Atomics.waitAsync")
 
 #ifdef V8_INTL_SUPPORT
 #define HARMONY_SHIPPING(V) \