In native context independent code we cannot embed the (native context
dependent) feedback vector as a constant. Instead, we will load it
from the JSFunction once and pass it to all users. This CL makes this
change for all unary operators. All other {binary,compare} operators
will need similar work in the future.

Bug: v8:8888
Change-Id: I4d49a6e0effc84dcdf3599814e5c2708b16bcc44
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2246576Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68448}