Updating to Vitest 0.25.7 breaks unit tests

Created with create-svelte.

Steps to reproduce

• Install the dependencies using your favorite package manager.
• Run the unit test (pnpm test:unit, yarn test:unit, npm run test:unit)
• Update vitest from 0.25.6 to 0.25.7
• Run the test again

Expected behavior

• In both cases, the unit test succeeds.

Actual behavior

• The unit tests succeeds only with vitest@0.25.6
• It fails with vitest@0.25.7

Later versions of Vitest

The test fails with 0.28.4 (latest) as well.

Notable changes from 0.25.6 to 0.25.7

• Vite has been upgraded from 3 to 4.
• Rollup is a dependency of Vite and has been upgraded from 2 to 3