test: move class files for testing

The module will be added dynamically. So it is special.

Author: kenjis

tests/_support/Test/AfterAutoloadModule/Config/Services.php renamed to tests/_support/_AfterAutoloadModule/Config/Services.php

@@ -362,7 +362,7 @@ public function testResetServiceCache(): void
 
         Services::autoloader()->addNamespace(
             'AfterAutoloadModule',
-            TESTPATH . '_support/Test/AfterAutoloadModule/'
+            SUPPORTPATH . '_AfterAutoloadModule/'
         );
         Services::resetServicesCache();