The check for non-canonical address access must come before the check
for nullptr access as the faultaddr will be 0x0 in the former case.

Bug: v8:12878
Change-Id: I6f141d08862879ec9ccb13c081aa6c75a3707530
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3875904
Auto-Submit: Samuel Groß <saelo@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82994}