fix: can't load `worker.js` in angular

[cipchk]

根源

目前 Angular 下无法将 worker.js 将文件复制到所需要的目录下，这导致现在有条件下加载文件时会 404 错误。

可以透过 WORKER_URL 具体定位文件所在路径。

此类似在非 Vite 下可能都会有类似情况。

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