Fingerprint: fix restarting timeout when screen is on

Sometimes an event might have removed the KEYGUARD_FINGERPRINT_AUTH
message even if it was queued up by the restart counter event at the
same time as the restart event.

With this change we don't immediately queue up two messages, but instead
start fingerprint auth immediately after the fingerprint timeout message
executes so it is always run and cannot be cancelled by other events.

Ref: SAMBAR-1243

Change-Id: If0a7e6f975fbe0c9a68ca89ecd211149fe2b646a
Signed-off-by: Roman Birg <roman@cyngn.com>