When an ACL has non-autogroup destinations (groups, users, tags, hosts)
alongside autogroup:self, emit non-self grants before self grants to
match Tailscale's filter rule ordering. ACLs with only autogroup
destinations (self + member) preserve the policy-defined order.
This fixes ACL-A17, ACL-SF07, and ACL-SF11 compat test failures.
Updates #2180