perf(checkbox): 删除 customChecked 内置逻辑

src/module/breadcrumbItem/index.vue

@@ -1,6 +1,6 @@
 <template>
-  <a href="javascript:void(0)">{{ title }}</a>
-  <span lay-separator="">{{ separator }}</span>
+  <a href>{{ title }}</a>
+  <span lay-separator>{{ separator }}</span>
 </template>
 
 <script setup name="LayBreadcrumbItem" lang="ts">