refactor(sidebar): 优化侧边栏组件结构

- 移除Item.vue中未使用的num1和num2属性
- 为el-menu-item和el-submenu组件添加基于meta.id的索引支持
- 移除未使用的Logo组件引用

src/layout/components/Sidebar/Item.vue

@@ -31,7 +31,7 @@ export default {
     }
   },
   render(h, context) {
-    const { icon, title, routePath, num1, num2 } = context.props
+    const { icon, title } = context.props
     const vnodes = []
     if (icon) {
       vnodes.push(<svg-icon icon-class={icon}></svg-icon>)

src/layout/components/Sidebar/SidebarItem.vue

@@ -2,7 +2,7 @@
   <div v-if="!item.hidden" class="menu-wrapper">
     <template v-if="hasOneShowingChild(item.children,item) && (!onlyOneChild.children||onlyOneChild.noShowingChildren)&&!item.alwaysShow">
       <app-link v-if="onlyOneChild.meta" :to="resolvePath(onlyOneChild.path)" style="font-size:16px">
-        <el-menu-item :index="resolvePath(onlyOneChild.path)" :class="{'submenu-title-noDropdown':!isNest}">
+        <el-menu-item :index="(onlyOneChild.meta && onlyOneChild.meta.id) || resolvePath(onlyOneChild.path)" :class="{'submenu-title-noDropdown':!isNest}">
           <item
             :icon="onlyOneChild.meta.icon||(item.meta&&item.meta.icon)"
             :title="onlyOneChild.meta.title"
@@ -14,7 +14,7 @@
       </app-link>
     </template>
 
-    <el-submenu v-else ref="subMenu" :index="resolvePath(item.path)" popper-append-to-body>
+    <el-submenu v-else ref="subMenu" :index="(item.meta && item.meta.id) || resolvePath(item.path)" popper-append-to-body>
       <template slot="title">
         <item
           v-if="item.meta"

src/layout/components/Sidebar/index.vue

@@ -21,12 +21,11 @@
 
 <script>
 import { mapGetters } from 'vuex'
-import Logo from './Logo'
 import SidebarItem from './SidebarItem'
 import variables from '@/styles/variables.scss'
 
 export default {
-  components: { SidebarItem, Logo },
+  components: { SidebarItem },
   computed: {
     ...mapGetters([
       'permission_routes',