refactor(image): move to script setup

[eiinu]

这个 PR 做了什么? (简要描述所做更改)

这个 PR 是什么类型? (至少选择一个)

• [ ] feat: 新特性提交
• [ ] fix: bug 修复
• [x] docs: 文档改进
• [ ] style: 组件样式/交互改进
• [x] type: 类型定义更新
• [ ] perf: 性能、包体积优化
• [x] refactor: 代码重构、代码风格优化
• [ ] test: 测试用例
• [ ] chore(deps): 依赖升级
• [ ] chore(demo): 演示代码改进
• [ ] chore(locale): 国际化改进
• [ ] chore: 其他改动（是关于什么的改动？）

这个 PR 涉及以下平台:

• [x] NutUI H5 @nutui/nutui
• [ ] NutUI Taro @nutui/nutui-taro

这个 PR 是否已自测:

• [x] 自测 Vite 脚手架使用 测试仓库
• [x] 自测 Taro 脚手架使用小程序 & Taro-H5 测试仓库

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 86.06061% with 23 lines in your changes are missing coverage. Please review.

Project coverage is 83.99%. Comparing base (328e3af) to head (fee108a).

Files	Patch %	Lines
src/packages/__VUE/image/image.vue	84.86%	23 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## v4 #3058 +/- ## ========================================== + Coverage 83.92% 83.99% +0.06% ========================================== Files 222 223 +1 Lines 23075 23055 -20 Branches 2480 2482 +2 ========================================== - Hits 19366 19365 -1 + Misses 3691 3672 -19 Partials 18 18 ```

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