[Bug]: --group=default unsupported in Pest

[Daniel-Worrall]

What Happened

In PHPUnit, you can run ungrouped tests by specifying to run the default group

In theory, you should be able to do --exclude-group but this doesn't work with multiple groups in parallel #1437

PHPUnit style tests run through Pest still work fine and are grouped default

How to Reproduce

Add a test with Pest formatting
Run with --group=default

Sample Repository

No response

Pest Version

4.1.0

PHP Version

8.3.29

Operation System

Linux

Notes

This, or the parallel exclude group, is a blocker to being able to transition to pest style tests