Integration `2026.w10`

* !3946 UE L1 cleanup
* !3929 UE: Fix if target cell during handover has SSB at a different offset as in source cell
* !3961 Remove Ubuntu 20 and RHEL/Rocky 8 support, increase cmake min version
* !3884 Integrate NRPPA and NGAP messages required for positioning
* !3784 CI: Create new pipeline for testing with Aerial and Jetson
* !3697 fix: issue 911 - OAI gNB hangs when AMF connection goes down
* !3914 Fix dB_fixed() function
* !3800 Add tracer to record configured events to database
* !3954 UHD streamer thread priorities in nrUE
* !3846 rename with distinct names structs and related typedefs, remove spread struct keyword
* !3958 Remove unused function arguments