suspend: Gate fs_abort_sync flag around API level

Gate toggling the fs_abort_sync flag around vendor API level, analagous
to the other SELinux files that have the same check for vendor API
level. This is needed to keep all SELinux policies in sync with each
other, and prevent unnecessary avc denials amongst different
API/kernel/userspace versions.

A future patch will remove the API level gating for this init.rc file as
well as all other appropriate SELinux files when the feature is fully
rolled out and validated on dogfood.

Bug: 463390549
Bug: 315272811
Change-Id: Ie307aed616c2dd7e846cb9ae2742db68d1cf0211
Signed-off-by: Samuel Wu <wusamuel@google.com>