wrong signature for req.body and next()

This is a regression in v5
```
import { NextFunction, Request, Response } from 'express';

export function someMiddleware(){
return (req: Request, res: Response, next: NextFunction) => {

// Property 'body' does not exist on type 'Request>'.ts(2339)
req.body

// Property 'method' does not exist on type 'Request>'.ts(2339)
req.method

// This expression is not callable.
// Type 'NextFunction' has no call signatures.ts(2349)
next()
}
}
```

## Environment information

**Version**:

```json
"dependencies": {
"express": "^5.0.1",
"@types/express": "^5.0.0",
}
```

**Platform**:
Linux 3f32d8f1babe 6.11.0-17-generic #17~24.04.2-Ubuntu SMP PREEMPT_DYNAMIC Mon Jan 20 22:48:29 UTC 2 x86_64 GNU/Linux

**Node.js version**:
v22.12.0