Merge branch 'integration_2025_w06' into 'develop'

Integration: `2025.w06`

See merge request !3248

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