Utils::ReportApiFailure() contains logic to handle the case where no
isolate has been entered but it called Isolate::Current(), which DCHECks
when there is no active isolate. Switch to Isolate::TryGetCurrent().

See https://github.com/denoland/rusty_v8/issues/253 for background.

Change-Id: I73c28c31102c0c4ab216a925d22ad54174c7911d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2020943Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65995}