[NextJS] REST Layout service ip resolving

[mathijs-b2m]

Should resolve GeoIP / tracking issues when using REST Layout Service together with next application running in containerized environment.

• This PR follows the Contribution Guide
• Changelog updated

Description / Motivation

When the REST Layout service is called from the Next application, when running containerized (instead of Vercel or other SWA environments) the x-forwarded-ip header should be forwarded instead of the socket remote address which can belong to a load balancer. Also replaced connection for socket as its deprecated since v16.

Testing Details

The solution should still be tested on other environments so it does not break functionality there.

• Tested on local Development with traefik / docker.
• Tested on Vercel
• Test with Azure SWA
• Tested on AKS / ingress container

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

[illiakovalenko]

@mathijs-b2m Thanks for your report and contribution! I've created a ticket with all the details in our internal backlog to review and merge PR.