fix jackson2 array deserialize

[chenzhenjia]

Using http://127.0.0.1:3000/oauth2/authorize?scope=openid%20profile&client_id=xx&response_type=code&state=12345&test=1&test=2 throws IllegalArgumentException

Caused by: java.lang.IllegalArgumentException: The class with [Ljava.lang.String; and name of [Ljava.lang.String; is not in the allowlist. If you believe this class is safe to deserialize, please provide an explicit mapping using Jackson annotations or by providing a Mixin. If the serialization is only done by a trusted source, you can also enable default typing. See https://github.com/spring-projects/spring-security/issues/4370 for details
	at org.springframework.security.jackson2.SecurityJackson2Modules$AllowlistTypeIdResolver.typeFromId(SecurityJackson2Modules.java:285)

This is because the spring security jackson2 module does not support deserialization of arrays

"org.springframework.security.oauth2.core.endpoint.OAuth2AuthorizationRequest": {
        "@class": "org.springframework.security.oauth2.core.endpoint.OAuth2AuthorizationRequest",
        "authorizationUri": "http://127.0.0.1:3000/oauth2/authorize",
        "authorizationGrantType": {
            "value": "authorization_code"
        },
        "responseType": {
            "value": "code"
        },
        "clientId": "JK8x0nogVy9",
        "redirectUri": "http://www.baidu.com",
        "scopes": [
            "java.util.Collections$UnmodifiableSet",
            [
                "openid",
                "profile",
                "roles"
            ]
        ],
        "state": "12345",
        "additionalParameters": {
            "@class": "java.util.Collections$UnmodifiableMap",
            "test": [
                "[Ljava.lang.String;",
                [
                    "1",
                    "2"
                ]
            ]
        },
        "authorizationRequestUri": "http://127.0.0.1:3000/oauth2/authorize?response_type=code&client_id=JK8x0nogVy9&scope=openid%20profile%20roles&state=12345&redirect_uri=http://www.baidu.com&test=%5BLjava.lang.String;@6279dcb4",
        "attributes": {
            "@class": "java.util.Collections$UnmodifiableMap"
        }
    }

[chenzhenjia]

Also the authorizationRequestUri value of OAuth2AuthorizationRequest is incorrect, but this is a problem with spring security oauth2 core

[jgrandja]

Thanks for the PR @chenzhenjia.

However, @MrJovanovic13 already offered to provide the fix (see comment) and I just merged it via gh-1676.

I'll close this as a duplicate.