Adding missing qgcView to QGCMapPolygonVisuals instance in SurveyMapVisual.qml

This will make setup pages respond accordingly to armed state
transitions. This will also allow the settings on a page to at least be
visible while they are disabled.

This makes VehicleComponents reusable from core plugin without
requiring override of prerequisiteSetup

_finalize methods need information which is not available if all you
have is a mavlink_message_t