Blender Git Loki

Fix T62156: Hair particle only shows up in final render when visible in viewport

Draw manager was checking for particles being enabled in viewport, but
actual evaluation was happening for render. Now the check in draw manager
properly follows current evaluation mode.

Additionally, de-duplicated some check, by moving everything needed to
a single place.

Annoying part is the const-cast, that could be cleaned up later by
modifying some underlying functions.