This was another IRL request from a mapper / team member. The rationale
here is that it can be very annoying to map with break time enabled if
you have a large gap in the beatmap you are trying to fill with
hitobjects, as you are placing objects on top of a very gray area.
More specifically, this fixes placement blueprints not beginning placement when using touch input while the cursor was previously outside compose area, due to the placement blueprint not existing (removed from the scene by `ComposeBlueprintContainer`).