When failing to construct a Ref, it helps debugging knowing which class
is the one we failed to create.

Bug: v8:7790
Change-Id: I22388920633fe2155c7b4fa712c5dead25a2f2d6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2992726Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75460}