Vitest Virtual Import Issue Reproduction

Minimal reproduction to demonstrate secondary calls to resolveId on plugins which use virtual modules

Steps to reproduce

• yarn install
• yarn test

I've modified the example plugin from the docs slightly to throw an error when resolveId is called a second time with the previously resolved module id.

I'm not sure if this is the expected behavior, but it seems odd that the resolved module id would be attempted to be resolved a second time.