BugFix: Fix toUseTrait to detect inherited and nested traits

[yondifon]

What:

• Bug Fix
• New Feature

Description:

The toUseTrait expectation was failing to detect traits in inheritance scenarios. When a class extends another class that uses a trait, toUseTrait would incorrectly return false.

Problem:

use Illuminate\Foundation\Queue\Queueable;

abstract class Job
{
    use Queueable;
}

class ProcessPayment extends Job
{
    // Inherits Queueable trait from Job
}

arch('that jobs are queued properly')
    ->expect('App\Jobs')
    ->toUseTrait('Illuminate\Foundation\Queue\Queueable'); // Failed

Root cause: Only checked getTraitNames() which returns directly used traits, not inherited ones.

Solution: Updated to use ReflectionClass->getTraits() and walk the inheritance chain with getParentClass(). Also handles nested traits.

After fix:

arch('that jobs are queued properly')
    ->expect('App\Jobs')
    ->expect('App\Jobs')->toUseTrait('Illuminate\Foundation\Queue\Queueable'); // Now passes

# Also works with other common Laravel patterns:
arch('that jobs serialize models properly')
    ->expect('App\Jobs')
    ->toUseTrait('Illuminate\Queue\SerializesModels');

Added test coverage for direct usage, inheritance, and nested traits.