Update to V8 12.8

[fhanau]

• Drop patch setting V8_ENABLE_CONTINUATION_PRESERVED_EMBEDDER_DATA, the V8 bazel build now enables it by default
• Update promise context tagging patch following V8 type casting changes
• Update absl and ICU dependencies to version used by V8
• Manually add define for Windows 10 which is now required by V8, this is not
  reflected in V8's bazel files so far.
• Upgrade LLVM 15 => 16 to support V8 12.8
• Resolve EmbedderRootsHandler deprecation warning
• Backport wasm race condition fixes – this resolves test failures under ASan.

[jasnell]

The failure with promise-wrapper-test appears to be caused by the use of SetNativeDataProperty(...) when configuring the read-only property. Switching to using SetAccessorProperty(...) allows the test to pass but has other side effects. We had to make a similar change with regards to non-read only properties recently so it appears the v8 continued to make some changes here that change the behavior of SetNativeDataProperty(...) further.