Other platforms besides ARM64 Windows may also have alignment
requirements, e.g. PPC and s390. These requirements may affect
both the code pointer field and the size field, and so they
each need alignment directives because they are stored in
different sections.

Since aligning wastes a handful of bytes at most, not making
alignment conditional on the platform type seems like a good idea.

Refs: https://github.com/nodejs/node/pull/24875
Change-Id: I1f58606af294be65e74a1f107cd05fc21e032704
Reviewed-on: https://chromium-review.googlesource.com/c/1433778
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59058}