Form: required FormItem displays asterisk when label is auto (#15144)

packages/theme-chalk/src/form.scss

@@ -132,7 +132,8 @@
 
   @include when(required) {
     @include pseudo('not(.is-no-asterisk)') {
-      & > .el-form-item__label:before {
+      & > .el-form-item__label:before,
+      & .el-form-item__label-wrap > .el-form-item__label:before {
         content: '*';
         color: $--color-danger;
         margin-right: 4px;