Revert "[compiler] Mark Name as kNeverSerialized"

This reverts commit 73875e95.

Reason for revert: https://chromium-review.googlesource.com/c/v8/v8/+/2565511 has to be reverted, and this was a follow-up to that

Original change's description:
> [compiler] Mark Name as kNeverSerialized
>
> Bug: v8:7790
> Change-Id: I44469e08131ad6a5f95a465cf2d461da0785221e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616218
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72012}

TBR=neis@chromium.org,solanes@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:7790
Change-Id: I300c7050522de3c5f44cb4466e87f3388f221725
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627603Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72097}

src/compiler/heap-refs.h

@@ -71,7 +71,6 @@ enum class OddballType : uint8_t {
   V(ArrayBoilerplateDescription)                    \
   V(CallHandlerInfo)                                \
   V(Cell)                                           \
-  V(Name)                                           \
   V(TemplateObjectDescription)
 
 // This list is sorted such that subtypes appear before their supertypes.
@@ -109,6 +108,7 @@ enum class OddballType : uint8_t {
   V(HeapNumber)                               \
   V(JSReceiver)                               \
   V(Map)                                      \
+  V(Name)                                     \
   V(PropertyCell)                             \
   V(SharedFunctionInfo)                       \
   V(SourceTextModule)                         \

src/compiler/js-heap-broker.cc

@@ -766,9 +766,7 @@ class NativeContextData : public ContextData {
 class NameData : public HeapObjectData {
  public:
   NameData(JSHeapBroker* broker, ObjectData** storage, Handle<Name> object)
-      : HeapObjectData(broker, storage, object) {
-    DCHECK(!FLAG_turbo_direct_heap_access);
-  }
+      : HeapObjectData(broker, storage, object) {}
 };
 
 class StringData : public NameData {