False positive in require-mock-type-parameters rule

[FloEdelmann]

See https://github.com/FloEdelmann/vue-ts-types/pull/802/files#diff-b762127509fe80fbe15d39c56430d58dcdc3b2a8b267a4815e0ee4683698ccd7:

This is wrongly reported by the new vitest/require-mock-type-parameters rule:

const validator3 = vi
  .fn<() => string | undefined>()
  .mockReturnValue('some error message');

These are both not reported:

const validator3 = vi
  .fn<() => string | undefined>(() => 'some error message');

const validator3 = vi
  .fn<() => string | undefined>();

[marekdedic]

Hmm, strange, let me take a look...

[marekdedic]

Thanks, I created a PR with a fix!