- [x] I have searched the [issues](https://github.com/vueComponent/ant-design-vue/issues) of this repository and believe that this is not a duplicate. ### Version 4.2.5 ### Environment win10,chrome,vue3.2.45 ### Reproduction link [](https://codesandbox.io/p/sandbox/gao-jing-du-xiao-shu-ant-design-vue-4-2-5-forked-zh76lw) ### Steps to reproduce 1、input-number组件,设置string-mode 2、设置精度precision为2 3、输入一个整数5 ### What is expected? 希望input-number绑定的值为'5.00' ### What is actually happening? 实际上值为'5' --- 在我们这个交易系统里,后端货币金额用字符串存储的,要求精确到小数点后两位,如果刚好是整数时input-number绑定的值后面没有补0,造成数据不一致,展示的时候不好看。目前我基于input-number自己扩展了一个组件去补0,还是希望直接使用官方组件就能做到。 <!-- generated by issue-helper. DO NOT REMOVE -->