This reverts commit 59798082.

Reason for revert: Need to revert previous CL.

Original change's description:
> Don't expose %SerializeDeserializeNow() to fuzzers
>
> The runtime function is not currently fuzzing-safe and will frequently
> cause crashes if used by fuzzers.
>
> Bug: 353971258, 353685107
> Change-Id: I692bbd752fc86930e4ea014d2557247422b6ba9a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/5725353


> Auto-Submit: Samuel Groß <saelo@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#95136}

Bug: 353971258, 353685107
Change-Id: I937dc0aac4e58790abbcc3baa31b2a3a77bc1271
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/5725935
Auto-Submit: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#95139}