feat(subscriptions): multiple tech user support

Description

Validation of Technical User UIs for multiple tech user support

Why

The frontend needs to be prepared to handle multiple service account responses. Possible impacted pages: The backend response of the following 4 endpoints might include multiple technical users:

appsubscription details page
servicesubscription details page
company-subscriptions details page

Issue

https://github.com/eclipse-tractusx/portal-frontend/issues/789

Checklist

Please delete options that are not relevant.

[X] I have followed the contributing guidelines
[X] I have performed a self-review of my own code
[X] I have successfully tested my changes locally

eclipse-tractusx / portal-frontend

feat(subscriptions): multiple tech user support #802

Description

Why

Issue

Checklist

Quality Gate passed