Fix for strategy enum bug

[StephenNneji]

After my previous PR, runs are failing at controls.strategy = int(input_controls.strategy) because we are using vars(self.controls).update(new_values) to set the control the enum string is not converted to an enum. This fix ensures an enum is always passed out of the controls widget.

Might be worth fixing this in python-RAT so it does not fail if strategy is a string

[alexhroom]

looks good to me! the userData parameter of addItem is neat, i didn't know that existed