Add 'checked' property in _field_radio.htm

Add 'checked' property in _field_radio.htm

modules/backend/widgets/form/partials/_field_radio.htm

@@ -16,6 +16,7 @@
                 name="<?= $field->getName() ?>"
                 value="<?= $value ?>"
                 type="radio"
+                <?= $field->value == $value ? 'checked="checked"' : '' ?>
                 <?= HTML::attributes($field->attributes) ?>>
 
             <label for="<?= $fieldId ?>">
@@ -34,4 +35,4 @@
         <p><?= e(trans($field->placeholder)) ?></p>
     <?php endif ?>
 
-<?php endif ?>
+<?php endif ?>