`mksnapshot --trace_turbo` will crash because builtins have no bytecode.

Bug: v8:7327
Change-Id: I61740b9ce934e85d158518787a2c7dc76c57e8d2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3834641Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82553}