Blender Git Loki

Fix T74096: Paint Masking overlay can`t be hidden

Caused by rB9516921c05bd.

Dont really see a reason to draw overlays here if overlays are disabled.
Looks like this only affects Face/Vertex mask selection drawing [which
should indeed be hidden when overlays are disabled] next to two
exceptions:

- OVERLAY_paint_vertex_cache_populate draws weights as well [D7176 /
T70807 might be related here, but to me it looks like drawing weights
here is actually not needed at all]

- OVERLAY_paint_texture_cache_populate calls
DRW_cache_mesh_surface_texpaint_get [not sure about this one, this is
also called from workbench_cache_texpaint_populate, looks like this is
not needed when overlays are hidden]

Maniphest Tasks: T74096

Differential Revision: https://developer.blender.org/D7179