Dragging video only icon from source monitor to timeline should ignore track lights

Current behaviour is to require source video tracks to be lit, and I can understand this for audio (where there are usually multiple tracks even on a source clip) but there's usually only 1 video track - so it's a 2 step process. Well 3 normally cos first you have to not have the drag work.

Feature request: IF there is only 1 of the track type dragged from source monitor available, then disregard track light state when dragging video-only or audio-only icon from source monitor to timeline.