Merge branch 'integration_2025_w28' into 'develop'

Integration: `2025.w28`

* !3517 CI: set interface name in UPF container for RFSim5G
* !3501 Fix automatic SSS detection logic
* !3503 DLSCH RB extraction: check DMRS bitmap only in DMRS symbols
* !3498 bugfix: UE AMBR is optional
* !3504 Improvements to the FHI for enabling further use cases

Closes #975

See merge request !3518