[objects] RELAXED_ACCESSORS macro to use relaxed accessors

Fix to make the macro actually use the relaxed accessors instead of the
atomic ones.

Bug: v8:7790, v8:11539
Change-Id: Ic74ee4084a76176feac138716e10b88a3a5e1a1d
Fixed: v8:11539
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2748088
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73316}

src/objects/object-macros.h

@@ -219,14 +219,14 @@
     return holder::name(isolate, tag);                                        \
   }                                                                           \
   type holder::name(IsolateRoot isolate, RelaxedLoadTag) const {              \
-    type value = TaggedField<type, offset>::load(isolate, *this);             \
+    type value = TaggedField<type, offset>::Relaxed_Load(isolate, *this);     \
     DCHECK(get_condition);                                                    \
     return value;                                                             \
   }                                                                           \
   void holder::set_##name(type value, RelaxedStoreTag,                        \
                           WriteBarrierMode mode) {                            \
     DCHECK(set_condition);                                                    \
-    TaggedField<type, offset>::store(*this, value);                           \
+    TaggedField<type, offset>::Relaxed_Store(*this, value);                   \
     CONDITIONAL_WRITE_BARRIER(*this, offset, value, mode);                    \
   }