https://crrev.com/c/3222763 has added a new global value `TB`
which is the same as our `test block` opcode. Cl is adding an
underscore to resolve the naming issue.

Change-Id: I4744f14dd594d4a58ed14d7651a6b7a0cad62ba8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3226801Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#77413}