This also makes OOMing on --always-sparkplug not crash

Bug: v8:11420
Change-Id: Ibaa5eb8a268a7d47ec30210f5cf5af51e514f039
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2786846
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73679}