Roll V8 from 19f214be7428 to 9e4826ab4ab9 (11 revisions)

https://chromium.googlesource.com/v8/v8.git/+log/19f214be7428..9e4826ab4ab9

2026-10-08 hans@chromium.org Revert "[heap] Disable cppgc_enable_object_names in Windows component builds"
2026-10-08 liuyu@loongson.cn [loong64][mips64][compiler] Simplify AssembleConstructFrame
2026-10-08 dmercadier@chromium.org [compiler] Mark JSCreateGeneratorObject as writing and deoptimizing
2026-10-08 arashk@chromium.org Reland "[sandbox] Add initial support for LA57 restricting tags to 7-bits"
2026-10-08 verwaest@chromium.org [parser] Validate non-pattern sub-expressions in patterns and arrow heads
2026-10-08 mlippautz@chromium.org [base] Make base::Vector API-compatible with std::span
2026-10-08 verwaest@chromium.org [preparser] Validate formal parameters even when body has syntax error
2026-10-08 mrcvtl@chromium.org [maglev] Poll safepoints in GraphProcessor
2026-10-08 simges@google.com Add missing negative implications for jitless, disable_optimizing_compilers, and maglev_as_top_tier
2026-10-08 leszeks@chromium.org [deserializer] Check source hash before starting BG merge
2026-10-08 verwaest@chromium.org [parser] Consolidate and remove redundant AcceptINScopes

If this roll has caused a breakage, revert this CL and set the roller
to dry run mode using the controls here:
https://autoroll.skia.org/r/v8-dawn
Please CC chouinard@google.com,webgpu-dev-team@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in V8: https://issues.chromium.org/issues/new?component=1456824
To file a bug in Dawn: https://crbug.com/dawn

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: None
Tbr: chouinard@google.com
Change-Id: Ia09e079889fc69a225ae925aa9cb675a5c07e7c0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/349655
Bot-Commit: dawn-autoroll@skia-public.iam.gserviceaccount.com <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: dawn-autoroll@skia-public.iam.gserviceaccount.com <dawn-autoroll@skia-public.iam.gserviceaccount.com>