session id in cdp request message is not equal to websocket session id in sessionManager

[alexliu-liu]

Hi Zackiles, I used playwright-stealth-plugin.ts, but when processing CDP request from client, the following error occurs when calling emitClientEvent. I further found that emitClientEvent relies on the sessionId associated with the WebSocket Pair, while the sessionId passed into emitClientEvent is in the CDP request message, and the two do not match. Therefore, I think that the sessionId associated with the WebSocket Pair should also be maintained in playwright-stealth-plugin.ts.