Skip permission check for system ui.

This is a workaround for a race condition between system ui and role
service's role based grants on boot.

The config value used is the same that the role service uses to give
system ui its role.

Test: Verify check is bypassed
Bug: 221782106
Change-Id: Ia44abeefbec1b27df6bf802d7493c03381518e96
1 file changed