Forgetting to add a new bytecode into the lists in
serializer-in-background-compiler.cc results in a confusing CHECK
failure.

This moves the failure to a discoverable place.

Change-Id: I3e78b4702bfa724748ec8ed3f7f49e0eedc504fc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2324246
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69290}