Integration: `2025.w17`

• !3377 (merged) Fix all direct MAC memory leaks
• !3397 (merged) Fix for MIB/SIB gNB delay mechanism
• !3399 (merged) SIBs in DL slot check
• !3401 (merged) F1AP: Allocate gNB_DU_ID before storing ID
• !3380 (merged) Issue 947 and compilation improvements
• !3391 (merged) small bugfix for T tracer
• !3261 (merged) Add Bearer Context Modification Request/Response enc/dec lib and adopt in stack
• !3178 (closed) mod: refactor PHY multiplications
• !3382 (merged) Improve radio for Metanoia RU (and likely others)
• !3388 (merged) Update CN5G images tags to the latest release in all CI pipelines
• !3351 (merged) Fix ASN1 struct double free
• !3405 (merged) Fix for NR UE DLSCH decoding barrier in case of no feedback
• !3404 (merged) Polar: remove dead code and a wrong comment