[Bug]: mutation testing fails if directory is called `Datasets`

What Happened

I have a few Livewire components living in the App\Livewire\Datasets\ namespace, and therefore their tests are in the tests\Feature\Livewire\Datasets directory.

The tests all pass just fine, but when I run the mutation testing I get the following

   Pest\Exceptions\ShouldNotHappen 

  This should not happen - please create an new issue here: https://github.com/pestphp/pest.

  Issue: A dependency with the name `Pest\Mutate\Contracts\MutationTestRunner` cannot be resolved.
  PHP version: 8.4.8
  Operating system: Darwin

How to Reproduce

• Create a Livewire component and its feature test
• add the mutate() method to the test
• rename directory where the tests lives to Datasets
• run the mutation testing

Sample Repository

No response

Pest Version

3.8.2

PHP Version

8.4.8

Operation System

macOS

Notes

No response

Start by reproducing the failure with Pest 3.8.2, PHP 8.4.8, and a test directory named Datasets, then compare it with the same test under another directory name. Trace the mutation-testing setup from the test using mutate() and investigate why Pest\Mutate\Contracts\MutationTestRunner cannot be resolved; done means mutation testing runs successfully for the Datasets directory.