Empty claims when extracting claims inside Authenticator.

I am trying to extract claims inside the Authenticator, to perform certain operations right after successful authentication - Login.

However I am getting empty claims everytime I extract them using the Extractclaims() method.

However I get the proper claim values in the Authorizatior.

```go
Authenticator: func(c *gin.Context) (interface{}, error) {
claims := jwt.ExtractClaims(c)
fmt.Println(claims["id"].(string))
}
```

I get nil for claim value inside authenticator.

```go
Authorizator: func(data interface{}, c *gin.Context) bool {
claims := jwt.ExtractClaims(c)
fmt.Println(claims["id"].(string))
},
```

I am getting the Id when using with Authorizatior.

Also the context body is right.

What am I missing?

Start by tracing ExtractClaims(c) from the Authenticator callback and compare the Gin context state there with the Authorizator callback, using the reproduction snippets in the issue. Determine whether claims should be available during authentication, then add or update the relevant test or behavior so the expected claim visibility is verified.

Written by the indexing model from the issue text.