fix [#34198] Scene unit size and dyntopo detail size
there were 2 bugs here.
- int buttons scaling values on input but not on display.
- pixel distances were using PROP_DISTANCE subtype - which isn't correct.

added assert incase PROP_INT values have PROP_DISTANCE subtype applied in future.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54482 954f8c5b-7b00-dc11-b283-0030488c597c