This CL has two changes:

1. Remove ValueDeserializer::Delegate::SupportsSharedValues. Only
   ValueSerializer::Delegate needs to report whether it supports
   serializing shared values. The ValueDeserializer::Delegate should
   DCHECK if it gets a shared object tag but it doesn't support it.
   This better mirrors what happens with SharedArrayBuffer transfers
   currently.

2. When attempting to serialize a shared object (shared struct, shared
   array, Atomics.Mutex, or Atomics.Condition) when
   !SupportsSharedValues(), throw instead of assert. This is for better
   ergonomics.

Bug: v8:12547
Change-Id: I2bb66830393526578016813c4e3488859dd07073
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3866302
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Auto-Submit: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82870}