fix: menu 组件 level 属性不生效

src/component/menu/index.less

@@ -327,8 +327,8 @@
   padding: 5px 17px 5px 17px;
 }
 
-.layui-nav-tree.level {
-  .layui-nav-itemed > .layui-nav-child {
+.layui-nav-tree.not-level {
+  .layui-nav-child {
     background-color: transparent;
   }
 }

src/component/menu/index.vue

@@ -27,7 +27,7 @@ const props = withDefaults(defineProps<LayMenuProps>(), {
   tree: false,
   theme: "dark",
   inverted: false,
-  level: false,
+  level: true,
   collapse: false,
   collapseTransition: true,
 });
@@ -82,7 +82,7 @@ provide("isCollapseTransition", isCollapseTransition);
   <ul
     class="layui-nav"
     :class="[
-      level ? 'level' : '',
+      level ? '' : 'not-level',
       inverted ? 'inverted' : '',
       tree ? 'layui-nav-tree' : '',
       theme === 'dark' ? 'layui-nav-dark' : 'layui-nav-light',