monitor slider: remove scaling of displayed value

Issue:
-Have a Level Slider, with bounds (say 128-255)
-Clone it
-Set the clone to Monitor mode
-Go to operate mode
-Move the first slider to 128
-Observe the monitor slider go to 192

This happens because monitored value it scaled from 0-255 to 128-255, so it is changed to 192.

Here we don't scale the value on receiving monitored value.