Blender Git Loki

Fix T55921: Toggling visibility for collections doesn't work in Pose

It is always dangerous to add more shortcuts those days. But this way it
is consistent with 2.79 to a point.

When in edit mode (mesh, greasepencil, ...) 1-3 to change submode still
has priority.

When in posemode or greasepencil draw mode however, 1-9 can still be
used to temporarily get some collections out of the way.