Integration: 2026.w29

- #280 Optimize syscalls in GTP receiver/sender, GTP F1 UL callback optimization
- #287 demote LOG_E for RRC Release with deprioritisationReq
- #259 [FHI72] Remove xran F release support
- #286 NR_PHY: Optimize layer demapping for PDSCH/PUSCH receiver performance
- #248 Allocate multiple UEs in one slot (DL/UL)
- #283 Update WLS library dependencies
- #284 Update OpenAirInterface repository links to the new Duranta Project repository
- #301 fix(t2): Accept CBs decoded across separate HARQ rounds
- #302 fix(phy): Fix an uninitialized variable bug in dot_product
- #303 fix(phy): use simde_mm_setr_epi16 to initialize alpha_128 in rotate_cpx_vector
- #298 ITTI: cleanup memset after alloc, adopt calloc_or_fail
- #299 Update the OAI UE config parameters check range with the standard SST and SD values
- #268 nfapi: support SRS channel reports for 64 gNB antenna elements
- fix for WLS PR
- #304 fix(PHY): compare NID2 instead of NID1 in rx_sss_nr() coherence check
- #277 chore: migrate FlexRIC submodule to GitHub
- #195 Add cell-level E2SM-KPM measurements
- #300 CI: Update Aerial setup to 26-1