Proper Reland "[wasm] Track meta data size with code size"

This is a proper reland of commit
c44de52316bae332be3e7b18d7f8a67931a08a7a

The reland https://crrev.com/c/5668528 somehow didn't contain the
original changes, just the fix for the lock inversion.

The issue with the original change:
There was a lock-order inversion between the WasmEngine::mutex_ and
the WasmImportWrapperCache::mutex_. The different orders:
1. create ModificationScope (cache mutex) and then call PublishCode()
-> LogCode() (engine mutex);
2. GC callback (engine mutex) which calls SampleCodeSize() (cache
mutex). (The callback is created in AddIsolate()).

Solution: We don't have to lock on the cache mutex while calling
PublishCode().

Original change's description:
> [wasm] Track meta data size with code size
>
> This CL adds two histograms to track the meta data size with code size
> for:
> - code flushing (WasmFlushedLiftoffCodeSizeAndMetadataBytes)
> - NativeModule::SampleCodeSize (WasmModuleCodeAndMetadataSizeKiB)
>
> Bug: 349610478
> Change-Id: If948f65c336cf4cdfcbfc5c50e88799f4993eedd
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/5660561
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Eva Herencsárová <evih@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#94736}

Bug: 349610478
Change-Id: I3ea7113668b2b826c5efddc24928fd5fc693014b
Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_dbg,v8_linux64_tsan_isolates_rel,v8_linux64_tsan_no_cm_rel,v8_linux64_tsan_rel,v8_numfuzz_tsan_rel
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/5671345
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Eva Herencsárová <evih@chromium.org>
Cr-Commit-Position: refs/heads/main@{#94781}