With the --always_promote_young_mc flag the mark-compact collector
cannot gracefully handle allocation failures when evacuating the young
generation. In some scenarios this causes OOM crashes without invoking
NearHeapLimitCallback.

This CL ensures that the young generation is evacuated before the old
generation because old generation evacuation can be aborted if needed.
Additionally, the CL cleans up usages of CanExpandOldGeneration.

Bug: v8:10843
Change-Id: I50d83912137afa3d3dac797dd4c6bddb51612334
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404829
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69937}