KiteTicker connection drop is not detected due to non-functional ping loop (_loop_ping does not send pings) #237

In kiteconnect/ticker.py, the _loop_ping method is scheduled during onOpen to maintain connection health. However, the method only updates _last_ping_time and schedules the next call; it never actually transmits a ping frame (self.sendPing() is never called).

Because of this, self._last_pong_time remains None indefinitely, rendering the _loop_pong_check connection drop detector inactive. In the event of a silent network drop (e.g., losing internet/WiFi without a TCP reset), the socket remains in a "ghost" connected state until the OS TCP keepalive timeout (which defaults to 2 hours on macOS) kills it.