Blender Git Loki

Fix T93999: GPencil Box tool allows decreasing subdiv, but not increase

The problem was the number of points for each edge of the box was wrong and the wheelmouse effect was anulated.

Also fixed the value displayed in the status bar to keep consistency with subdivision value.

Reviewed By: lichtwerk

Maniphest Tasks: T93999

Differential Revision: https://developer.blender.org/D1363