Revert "Move zygote's seccomp setup to post-fork"

This reverts commit 6a4a3398325787f6cb1b93db17a7bf50d353e2a5.

Reason for revert: caused some SELinux error

Bug: 71768585
Change-Id: I0ef270ec6fed1d5d96b4257ec1a2dd6a55a816ed
Merged-In: Ic1b81e146b52b68445ba634de39657f199107da3
5 files changed