The original CL triggered a fail in a test that was actually broken.
This broken test has now been disabled.

Original CL description:

> In a subsequent CL, I'll need to do String allocations in Turbofan (in
> the background), where only a LocalFactory is available. By moving
> those string allocation functions to FactoryBase, they will also be
> available in the LocalFactory.
>
> Change-Id: I066bbd4b5016645de183633ef237986e0ae50f5d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3811581
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Darius Mercadier <dmercadier@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#82262}

Change-Id: I89108038bd7b3d1e99ad16837fd730b7703d3c9b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3816669Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Darius Mercadier <dmercadier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82335}