Fix process hanging after tests complete with Playwright

- Add delayed auto-exit (2s) after cleanup completes
- Prevents Playwright event loops from keeping process alive
- Can be disabled with CODECEPT_DISABLE_AUTO_EXIT env var
- Uses unref() to allow natural exit if possible
- Respects existing exit handlers and exit codes

Author: kobenguyent

lib/helper/Playwright.js

@@ -982,6 +982,18 @@ class Playwright extends Helper {
         }
       }
     }
+
+    // Schedule a delayed exit to prevent process hanging due to Playwright event loops
+    // This ensures the process exits even if Playwright has active handles
+    // Give it 2 seconds for any pending operations to complete
+    if (!process.env.CODECEPT_DISABLE_AUTO_EXIT) {
+      setTimeout(() => {
+        if (process.listenerCount('exit') === 0) {
+          // No other exit handlers, safe to exit
+          process.exit(process.exitCode || 0)
+        }
+      }, 2000).unref()
+    }
   }
 
   _session() {