... instead of ISOLATELESS_GETTER for declaring and defining getters
and predicates that have to deal with decompression of tagged fields.

The new macro eases introduction of isolate-full getters.

Bug: v8:9353
Change-Id: Ic63baea819a9320c5677f5bd7dda123d7334d80f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1676285
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62373}