Typings issue with `io.engine.use`

[fastndead]

Describe the bug
In the How to use with express-session part of the docs, there's an example for 4.6.0+ version of the library, that suggests to use express middleware with io.engine.use, but typings seem to be off. io.engine.use accepts Middleware type, but express-session middleware type is RequestHandler. Both are middleware handlers but the request types diverge. It leads to this issue:

To Reproduce
Socket.IO server version: 4.6.0

Server

import session from "express-session";

const sessionMiddleware = session({
  secret: "changeit",
  resave: false,
  saveUninitialized: false
});

io.engine.use(sessionMiddleware);

Expected behavior
No TS errors. Types are compatible

Platform:

• Device: MacBook
• OS: MacOS

[darrachequesne]

For future readers:

This should be fixed by socketio/engine.io@0141951, included in engine.io@6.4.2 (and in Socket.IO v4.6.x).