feat: add `form-is-required` class for required items. fixed: #5739 (#5759)

packages/@core/ui-kit/form-ui/src/form-render/form-field.vue

@@ -290,6 +290,7 @@ onUnmounted(() => {
       v-show="isShow"
       :class="{
         'form-valid-error': isInValid,
+        'form-is-required': shouldRequired,
         'flex-col': isVertical,
         'flex-row items-center': !isVertical,
         'pb-6': !compact,