Fix event test by using array cache store

The file cache store returns false from flush() when its directory
doesn't exist, causing ClearingResponseCacheFailedEvent to be
dispatched instead of ClearedResponseCacheEvent. Switch to the
array cache store for this test so clear() succeeds reliably.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: freekmurze

tests/Commands/ClearCommandTest.php

@@ -51,6 +51,9 @@
 });
 
 it('will fire events when clearing the cache', function () {
+    $this->app['config']->set('responsecache.cache.store', 'array');
+    $this->app->forgetInstance('responsecache');
+
     Event::fake();
 
     Artisan::call('responsecache:clear');