fix(worker): throw error when circular worker import is detected and support self referencing worker

[sapphi-red]

Description

The first commit makes Vite to throw an error when a circular worker import is detected.
The second and third commits adds support for simple circular import cases (self reference).

fixes #7015

I didn't add support for complex cases (e.g. worker-a.js has import 'worker-b.js?worker' and worker-b.js has import 'worker-a.js?worker'). For those cases, Vite now throw errors (before this PR, the build never finished). But I think it's fine because doing that is not popular and will make the code complex. I checked that supporting the simple cases makes the build of #7015, #7015 (comment), #12755, #14499, #15288, #15426, jamsinclair/jSquash#15 pass.

Additional context

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines, especially the Pull Request Guidelines.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Update the corresponding documentation if needed.
• Ideally, include relevant tests that fail without this PR but pass with it.

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[patak-dev]

/ecosystem-ci run

[vite-ecosystem-ci]

📝 Ran ecosystem CI on b779f40: Open

suite	result	latest scheduled
analogjs	✅ success	❌ failure
nx	❌ failure	❌ failure

✅ astro, histoire, ladle, laravel, marko, nuxt, previewjs, qwik, rakkas, sveltekit, unocss, vike, vite-plugin-pwa, vite-plugin-react, vite-plugin-react-pages, vite-plugin-react-swc, vite-plugin-svelte, vite-plugin-vue, vite-setup-catalogue, vitepress, vitest

[patak-dev]

Awesome! Feel free to merge this one if you'd like to see it in a patch. If not, I'll wait for 5.2