deps: V8: cherry-pick 6eff00a342cb

Original commit message:

    [runtime] zero-initialize descriptor array padding

    So that snapshot and code cache stay reproducible.

    See nodejs/node-v8#304

    Change-Id: Ic30970097ab46a26fa5bcf0f73e0fe62089890cc
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/7271645
    Reviewed-by: Patrick Thier <[email protected]>
    Commit-Queue: Joyee Cheung <[email protected]>
    Cr-Commit-Position: refs/heads/main@{#104436}

Refs: v8/v8@6eff00a

Author: joyeecheung

common.gypi

@@ -38,7 +38,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.9',
+    'v8_embedder_string': '-node.10',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/src/objects/objects.cc

@@ -3937,6 +3937,9 @@ void DescriptorArray::Initialize(Tagged<EnumCache> empty_enum_cache,
   set_enum_cache(empty_enum_cache, SKIP_WRITE_BARRIER);
   set_flags(FastIterableBits::encode(FastIterableState::kUnknown),
             kRelaxedStore);
+#if TAGGED_SIZE_8_BYTES
+  set_optional_padding(0);
+#endif
   MemsetTagged(GetDescriptorSlot(0), undefined_value,
                number_of_all_descriptors() * kEntrySize);
 }