[#5668549] Resets selector to a null option if nav dialog is cancelled.
[#5668549] Resets selector to a null option if nav dialog is cancelled.

JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano