bugfix: 恢复监听器的start方法中的self.listening状态变化，和其他成员参数的状态变化，解决wait函数中的报错

DrissionPage/_units/listener.py

@@ -87,6 +87,12 @@ class Listener(object):
         self._driver = ChromiumDriver(self._target_id, 'page', self._address)
         self._driver.run('Network.enable')
 
+        self.listening = True
+        self._request_ids = {}
+        self._extra_info_ids = {}
+        self._caught = Queue(maxsize=0)
+        self._running_requests = 0
+
         self._set_callback()
 
     def wait(self, count=1, timeout=None, fit_count=True, raise_err=None):