[dsme] End transition submode on init_done condition. JB#22475
[dsme] End transition submode on init_done condition. JB#22475

The dsme tracking module ends transition submode only when it
receives init-done D-Bus signal. If mce is restarted after
init-done is already reached, the signal is never received.

End transition submode also based on init_done datapipe, which
is updated based on flag file rather than D-Bus signal.

Signed-off-by: Simo Piiroinen <6d5e5360bed3d486f7d9fb26b0f737f7d4fd45ee@jollamobile.com>

spiiroin/mce,spiiroin/mce,spiiroin/mce,spiiroin/mce