chore(portal): improve centralidp configuration

[oyo]

Description

improve centralidp configuration for clients, realm and address as realm and clients are now configurable in the frontend deployment resources.

Why

Values have been moved from hard coded to configurable in portal and registration app

Related:

• https://github.com/eclipse-tractusx/portal-frontend/pull/606
• https://github.com/eclipse-tractusx/portal-frontend-registration/pull/134

Issue

#502

Checklist

• [x] I have followed the contributing guidelines
• [x] I have performed a self-review of my own code