The assert code gets put into an unreachable block in release builds
to make sure it's type-checked and torque knows the code it contains is
used, but still it doesn't emit actual machine code.

Bug: v8:7793
Change-Id: I580fdd7ac059e0dbe85283fd35c3038634a7228e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1857226Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Auto-Submit: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64270}