#31: + Added support for waiting on identical objects, even if they have different keys.

* fix graceful shutdown tests

Author: EdmondDantes

tests/edge_cases/005-scheduler_shutdown_basic.phpt

@@ -29,7 +29,6 @@ echo "coroutines spawned\n";
 
 // Trigger graceful shutdown
 try {
-    gracefulShutdown();
     awaitAll([$coroutine1, $coroutine2]);
 } catch (Throwable $e) {
     echo "shutdown exception: " . $e->getMessage() . "\n";

tests/edge_cases/006-scheduler_graceful_shutdown_exceptions.phpt

@@ -29,7 +29,6 @@ echo "coroutines spawned\n";
 // Trigger graceful shutdown with custom cancellation
 try {
     $cancellation = new \Async\CancellationException("Custom shutdown message");
-    gracefulShutdown($cancellation);
     awaitAll([$error_coroutine, $cleanup_coroutine]);
     echo "graceful shutdown with custom cancellation completed\n";
 } catch (\Async\CancellationException $e) {