[compiler] only emit constant loads for constant owner map

Bug: chromium:1323114
Change-Id: I2ec6c7d5eb5ef08914cfc1fac52d0128ecb27c53
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3630081Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Auto-Submit: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80417}

src/compiler/access-info.cc

@@ -482,12 +482,8 @@ PropertyAccessInfo AccessInfoFactory::ComputeDataFieldAccessInfo(
       dependencies()->FieldTypeDependencyOffTheRecord(
           map, descriptor, descriptors_field_type_ref.value()));
 
-  PropertyConstness constness;
-  if (details.IsReadOnly() && !details.IsConfigurable()) {
-    constness = PropertyConstness::kConst;
-  } else {
-    constness = dependencies()->DependOnFieldConstness(map, descriptor);
-  }
+  PropertyConstness constness =
+      dependencies()->DependOnFieldConstness(map, descriptor);
 
   // Note: FindFieldOwner may be called multiple times throughout one
   // compilation. This is safe since its result is fixed for a given map and