fix(radios): fix trim value

Signed-off-by: btry <tbugier@teclib.com>

Author: btry

inc/fields/radiosfield.class.php

@@ -97,6 +97,7 @@ public function prepareQuestionInputForSave($input) {
             return ($value !== '');
          });
          $this->value = array_shift($this->value);
+         $input['default_values'] = $this->value;
       }
       return $input;
    }