Forms use the targetOnCompletion field to specify where the form should return to on completion.

When the field has multiple query parameters e.g

/api/v1/webform/create/address/?parentfid=form178f09d8694&targetOnCompletion=/webform/create/delivery-details?order.id=1&fid=form178f09d8694

then it is not handled properly by

FormParamsUtil.java#L29

The above method extracts the fid=form178f09d8694as part of the Form's properties where as it is a part oftargetOnCompletion=/webform/create/delivery-details?order.id=1&fid=form178f09d8694`
and should not be part of the Form's properties. It is targetOnCompletion that is a form property.

We need to properly handle a targetOnCompletion comprising of multiple query parameters.