With concurrent inlining, the TransitionDependency ctor can no
longer assume that the given map is not deprecated. This is not an
issue since IsValid will check it again.

Also remove some other outdated DCHECKs and turn a few DCHECKs into
CHECKs since the properties they check are not so obvious anymore with
concurrency.

Bug: v8:12033, v8:7790
Change-Id: I932f7f6440697d693b0c0e6472406329af29b46b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3062576Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76020}