Add fix vts fail when configureMonitorEvent

[Description]
VTS StartFilterInDemux failed when configureMonitorEvent is called

[Root Cause]
Scrambling status event is not notified when configureMonitorEvent is called
so test case failed.

[Solution]
Scrambling status event is not notified because of no input data.
Add input setting and check event notified or not after data is input.

Bug: 288193021
Change-Id: Icaaf0adc5bbd1c512742c48b0b665218da1c7980