Integration: `2025.w24`

• !3354 (merged) Preparation Work for N2 Handover
• !3383 (merged) Add configurable values of NR RLC and NR PDCP to the configuration file
• !3468 (merged) Resolve "SSB frequency at gnb.sa.band78.fr1.24PRB.usrpb210.conf is invalid"
• !3466 (merged) YAML related updates
• !3460 (merged) SRS configuration
• !3474 (merged) Fix AMF selection fallback by PLMN ID when no UE identity is present or matching
• !3473 (merged) Fix various bugs and inconsistencies in config read, SCTP, ITTI, GTP
• !3169 (merged) NR RU improvements for analog beamforming
• !3456 (merged) CI: update config for AW2S pipeline
• !3369 (merged) Add Security Mode Reject lib/unit test and adopt in stack
• !3457 (merged) Fix NR reestablishment
• !3412 (merged) [E2 agent] E2AP README update and OAI-FlexRIC CI pipeline improvements