bug: warnings when compiling Ionic css with lightningcss - ionic outputs deprecated host-context pseudo-class

### Prerequisites

- [X] I have read the [Contributing Guidelines](https://github.com/ionic-team/ionic-framework/blob/main/docs/CONTRIBUTING.md#creating-an-issue).
- [X] I agree to follow the [Code of Conduct](https://ionicframework.com/code-of-conduct).
- [X] I have searched for [existing issues](https://github.com/ionic-team/ionic-framework/issues) that already report this problem, without success.

### Ionic Framework Version

v8.x

### Current Behavior

When I compile Ionic Framework's css with lightningcss, I see the following error multiple times:

```
'host-context' is not recognized as a valid pseudo-class. Did you mean '::host-context' (pseudo-element) or is this a typo?
```

### Expected Behavior

No warnings

### Steps to Reproduce

1. Go to https://stackblitz.com/edit/meehep-hzppdu?file=vite.config.js
2. In console, `npm run build`
3. See warnings

### Code Reproduction URL

https://stackblitz.com/edit/meehep-hzppdu?file=vite.config.js

### Ionic Info

Latest stackblitz

### Additional Information

_No response_

从链接的 StackBlitz 复现项目及其 vite.config.js 开始，然后运行 npm run build 以复现这些警告。跟踪 Ionic 的 CSS 在何处编译，并确认构建完成时不会出现关于已弃用的 host-context 伪类的警告。

由索引模型根据 Issue 内容生成。