[ 2° ] - Release/v2.1.2 policy styles

[davidzynda]

Why we create this PR?

There are some differences of style between Catena-X and our app

What we want to achieve with this PR?

Align with Catena-X style guide and fix qr code issue

What is new?

Issues Fixed

• Align UI style
• Policy modal responsiveness
• A more descriptive policy choice

• QR code reader bug fix

  PR related to:

https://github.com/eclipse-tractusx/sig-release/issues/511

[matbmoser]

Runned IP checks here everything fine!