Fix checkSimIsReadyAndGoNext()

This function is waiting for sim to be enabled, then goto next step.

Before this fix, receiver register / unregister is not lifecycle scope
awareness, after fix this, use flow, which is cancelled when the
coroutine lifecycle scope cancelled.

Fix: 381153100
Flag: EXEMPT bug fix
Test: manual - switch between two sims (hard code dsds requires reboot)
Change-Id: If9cbb0cbf7d460b659d827897306c07d642bb231