Toast重复触发onClose方法

### NutUI 包名

@nutui/nutui-taro, @nutui/nutui

### NutUI 版本号

4.3.14

### 平台

h5

### 重现链接

https://nutui.jd.com/playground/#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

### 重现步骤

1. 设置cover、closeOnClickOverlay和onClose
```javascript

const show = () => {
showToast.text('Hello, NutUI!', {
onClose: () => {
count.value = count.value + 1
},
cover: true,
closeOnClickOverlay: true
})

};
```
3. 点击按钮触发Toast提示
4. 点击遮罩层触发关闭
5. onClose执行两次

<img width="1728" height="1000" alt="Image" src="https://github.com/user-attachments/assets/68e8e180-1995-4556-89e9-78280212f1ae" />

### 期望的结果是什么？

onClose只触发一次

### 实际的结果是什么？

onClose触发两次

### 环境信息

System:
OS: macOS 15.7.4
CPU: (12) arm64 Apple M2 Pro
Memory: 177.50 MB / 16.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.14.0 - /Users/heyongqi10/.local/share/fnm/node-versions/v24.14.0/installation/bin/node
Yarn: 1.22.22 - /Users/heyongqi10/.local/share/fnm/node-versions/v24.14.0/installation/bin/yarn
npm: 11.9.0 - /Users/heyongqi10/.local/share/fnm/node-versions/v24.14.0/installation/bin/npm
pnpm: 10.32.1 - /Users/heyongqi10/.local/share/fnm/node-versions/v24.14.0/installation/bin/pnpm
Browsers:
Chrome: 146.0.7680.165
Safari: 26.3
npmPackages:
@nutui/nutui: ^4.3.14 => 4.3.14

### 其他补充信息

_No response_