For large frames we are executing a special stack check that checks the
remaining stack space before allocating the new frame. Different
platforms used different limits for the frame size so far. Liftoff
already uses 4KB everywhere, hence use the same limit also for TurboFan.

Drive-by: Remove an outdated and misleading comment, and other minor
simplification.

R=ahaas@chromium.org

Bug: v8:12017
Change-Id: I6548b2293ec255349bf4e08c26fd05b7e0df0497
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3063501Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76034}