... in preparation for upcoming changes to 1. make construct node
layout more consistent with call nodes by placing new_target
(construct) in the same spot as receiver (call); and 2. adding the
feedback vector input.

Bug: v8:8888
Change-Id: I6cd7f50ed0b029de53af5cd82e7ecf4ba514ef65
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2275963
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68689}