[4.x] --parallel does not handle multiple --exclude-group flags

What Happened

./vendor/bin/pest --exclude-group='foo' --exclude-group='should exclude' --parallel

This only excludes the foo group, causing the should exclude tests to be executed.

How to Reproduce

Using Pest 3.8.3 in a clean workspace, I have modified the ExampleTest as follows:

<?php

test('example', function () {
    expect(true)->toBeTrue();
});

test('exclude me', function () {
    expect(false)->toBeTrue();
})->group('should exclude');

The test suite when run with --parallel ignores subsequent --exclude-group flags. Scenarios:

• ./vendor/bin/pest --exclude-group='foo,should exclude' -- works fine
• ./vendor/bin/pest --exclude-group='foo,should exclude' --parallel -- works fine
• ./vendor/bin/pest --exclude-group='foo' --exclude-group='should exclude' -- works fine
• ./vendor/bin/pest --exclude-group='foo' --exclude-group='should exclude' --parallel -- only excludes the foo group, causing the should exclude test to be executed

Sample Repository

No response

Pest Version

3.8.3

PHP Version

8.3.24

Operation System

Linux

Notes

No response

Start by reproducing the issue with Pest 3.8.3 using the two separate --exclude-group flags and --parallel, then compare it with the comma-separated and non-parallel commands listed above. Locate the parallel CLI option handling; done means both excluded groups are omitted in the parallel case, with the existing scenarios still passing.