fix(tabBarItem): issues：TabbarItem component in the route mode fails …

[lzxiaoqi]

…to bind with v-model

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修复issues中提到的Tabbar组件在路由模式下访问TabbarItem导致v-model未同步修改的问题 TabbarItem component in the route mode fails to bind with v-model

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 89.61%. Comparing base (379f44a) to head (a2f9cdf).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13177      +/-   ##
==========================================
- Coverage   89.67%   89.61%   -0.07%     
==========================================
  Files         257      257              
  Lines        7004     7008       +4     
  Branches     1732     1733       +1     
==========================================
- Hits         6281     6280       -1     
- Misses        378      384       +6     
+ Partials      345      344       -1     

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[lzxiaoqi]

https://github.com/youzan/vant/issues/13172

[inottn]

Thanks for your PR. Can you add a test case for this issue?

[lzxiaoqi]

Thanks for your PR. Can you add a test case for this issue?感谢您的 Pull Request。能否为这个问题添加一个测试用例？

您好 测试用例已经添加 看是否ok的

[lzxiaoqi]

这个晚些时候想一下有没有更好的解决办法 看样子是优化代码解决计算属性中的副作用之后涉及到路由的单元测试存在点问题