Integration: `2025.w06`

• !3202 (merged) Simplify usage of the old segment decoding libraries with the slot coding interface
• !3240 (merged) Fix typos in NR_SA_Tutorial_OAI_multi_UE.md
• !3242 (merged) Period based phytest bitmap
• !3238 (merged) Refactor tun_if.h
• !3000 (merged) Improvements for NR dlsim and ulsim
• !3239 (merged) Remove inexistant SIMD instruction
• !3246 (merged) Deadlock avoidance in rfsimulator
• !3251 (merged) nFAPI: make 4-layer on 100MHz work
• !3243 (merged) Reset E1 UE contexts after E1 Setup Response
• !3245 (merged) Added Support of 35Mhz,45Mhz,70Mhz Bandwidth
• !3219 (merged) E1AP enc/dec lib improvements