fix: one-line environment options

[hahanein]

Description

Closes #5104

Environment options cannot be parsed when declared like so:

/** @vitest-environment-options {"url": "https://vitejs.dev"} */

The regexp captures {"url": "https://vitejs.dev"} */

I would like to add tests but I get hit with the following error message when trying to run them:

examples/graphql test: Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/home/benjamin/projects/vitest/packages/vitest/dist/cli-wrapper.js' imported from /home/benjamin/projects/vitest/packages/vitest/vitest.mjs

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[hi-ogawa]

I would like to add tests but I get hit with the following error message when trying to run them

Maybe you forgot pnpm dev (or pnpm build)?

vitest/CONTRIBUTING.md

Lines 16 to 22 in cfd0611

	1. Run `pnpm install` in `vitest`'s root folder
	2. Run `pnpm run dev` to build sources in watch mode
	3. Run
	- `pnpm run test` to run core tests
	- `pnpm run test:all` to run all the suite