Explicitly forbid serialization and deserialization of driver

Author: trowski

src/EventLoop/Internal/AbstractDriver.php

@@ -639,4 +639,14 @@ private function createErrorCallback(): void
             }
         };
     }
+
+    final public function __serialize(): never
+    {
+        throw new \Error(__CLASS__ . ' does not support serialization');
+    }
+
+    final public function __unserialize(array $data): never
+    {
+        throw new \Error(__CLASS__ . ' does not support deserialization');
+    }
 }