Check CProjectileDrawer headless redundancy

#2149 silences some error, but perhaps most of the work done by the projectile drawer is pointless and could be avoided. Could check other drawers similarly as well.

Start by reading the context from #2149 and inspecting CProjectileDrawer in its headless usage. Determine which projectile-drawer work is redundant in headless mode, and record whether the same concern applies to other drawers.

Written by the indexing model from the issue text.