The inset operator would display the inset thickness and depth as
Blender units during transform. This meant that when the scene units
were set to something different than meters, the display value would
give different results than entering the same number using the value
input. (Similar to D10325)
The fix makes sure that the numbers are always displayed in the correct
scene units.
Reviewed By: campbellbarton
Maniphest Tasks: T85488
Differential Revision: https://developer.blender.org/D10366