I maybe wrong ,but the rudder trim doesn't move the nosewheel.
When you check flight controls on ground you are required to hold the stering wheel when aplying full rudder (to avoid movement of the nosewheel).
You are not required to do this while checking full motion of the rudder trim.
This was just a empirical explanation,but I can tell you that the nosewheel is not moving while selecting full ruder trim motion.(the rudder pedals are moving though due to reseting of the rudder feel and centering unit)
Brgds Alex