improved selection of role subject when adding to user

Author: ZakharovAndrew

src/views/user-roles/_form.php

@@ -62,7 +62,7 @@ function setSubjects() {
 
     <?= $form->field($model, 'subject_id')->textInput(['maxlength' => true]) ?>
 
-    <div id="role_subject_group" class="form-group">
+    <div id="role_subject_group" class="form-group" style="display: none">
         <label class="control-label" for="role_subject"><?= Module::t('Subject of the role') ?></label>
         <select id="role_subject" class="form-control form-select"></select>
     </div>