[FAPI] Add JARM for error flows

[anjuchamantha]

Git Issue: wso2/product-is#18062

As in the above git issue, to properly send the request object validation errors in the redirect url (mainly in JARM flows), we need to access couple of parameters inside request object eventhough the request object is not valid.

With this PR, we just do the validation of the request object and pick the needed params (client_id, state, response_mode, response_type).

[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/7114913113

[jenkins-is-staging]

PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/7114913113
Status: success

[jenkins-is-staging]

Approving the pull request based on the successful pr build https://github.com/wso2/product-is/actions/runs/7114913113

[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/7138983612

[jenkins-is-staging]

PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/7138983612
Status: success

[jenkins-is-staging]

Approving the pull request based on the successful pr build https://github.com/wso2/product-is/actions/runs/7138983612

[Thumimku]

Hi @anjuchamantha,

⚠️ Notice: This PR has been open for a while. To keep the repository clean and up-to-date, this PR will be closed within the next two weeks if there is no further activity.

Please take one of the following actions:

• Merge the PR if it is ready.
• Close the PR if it is no longer relevant.
• Leave a comment explaining why it should remain open and provide an update on its progress.

Your prompt attention to this matter is greatly appreciated. Thank you for your understanding and collaboration! 🙏