This CL makes SelectGarbageCollector choose MinorMC to finalize
minor incremental marking if the allocation space is new space.

Bug: v8:13012
Change-Id: I0125d956842d83683cf3b1c5999de0e10a43dee5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3871074
Commit-Queue: Leon Bettscheider <bettscheider@google.com>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82956}