[Object.hasOwn] Move flag to harmony shipping

https://groups.google.com/a/chromium.org/g/blink-dev/c/di9BL9d1CKI/m/6_GkR7eMAgAJ

Bug: chromium:1213927
Change-Id: I22226007f906fba7f523e15ad8abea09bcbcee77
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2988749
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75407}

src/flags/flag-definitions.h

@@ -285,9 +285,8 @@ DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
 #endif
 
 // Features that are complete (but still behind --harmony/es-staging flag).
-#define HARMONY_STAGED_BASE(V)                                        \
-  V(harmony_class_static_blocks, "harmony static initializer blocks") \
-  V(harmony_object_has_own, "Object.hasOwn")
+#define HARMONY_STAGED_BASE(V) \
+  V(harmony_class_static_blocks, "harmony static initializer blocks")
 
 #ifdef V8_INTL_SUPPORT
 #define HARMONY_STAGED(V)                                 \
@@ -309,7 +308,8 @@ DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
   V(harmony_private_brand_checks, "harmony private brand checks")           \
   V(harmony_top_level_await, "harmony top level await")                     \
   V(harmony_relative_indexing_methods, "harmony relative indexing methods") \
-  V(harmony_error_cause, "harmony error cause property")
+  V(harmony_error_cause, "harmony error cause property")                    \
+  V(harmony_object_has_own, "harmony Object.hasOwn")
 
 #ifdef V8_INTL_SUPPORT
 #define HARMONY_SHIPPING(V)             \