fix(android) fix crash when staring ongoing notification

[saghul]

No description provided.

[saghul]

Fixes this:

          Caused by java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.Boolean.booleanValue()' on a null object reference
       at org.jitsi.meet.sdk.OngoingNotification.buildOngoingConferenceNotification(OngoingNotification.java:107)
       at org.jitsi.meet.sdk.JitsiMeetOngoingConferenceService.onStartCommand(JitsiMeetOngoingConferenceService.java:218)
       at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:5373)
       at android.app.ActivityThread.access$3200(ActivityThread.java:279)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2571)
       at android.os.Handler.dispatchMessage(Handler.java:109)
       at android.os.Looper.loopOnce(Looper.java:206)
       at android.os.Looper.loop(Looper.java:296)
       at android.app.ActivityThread.main(ActivityThread.java:9000)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:569)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:976)

@Calinteodor Pl release a .1 SDK and app.