Merge remote-tracking branch 'origin/fix_msg3_crnti_fail' into integration_2025_w37 (!3634)

reset MSG3 C-RNTI flag in case of failure

If MSG3 with C-RNTI fails, the UE should come back with a
re-establishment (after a given number of RA failures in general). In
that case, the OAI UE wouldn't reset the MSG3 with C-RNTI flag leading
to re-establishment failure.

openair2/LAYER2/NR_MAC_UE/main_ue_nr.c

@@ -198,6 +198,7 @@ void reset_mac_inst(NR_UE_MAC_INST_t *nr_mac)
 
   // stop any ongoing RACH procedure
   if (nr_mac->ra.RA_active) {
+    nr_mac->msg3_C_RNTI = false;
     nr_mac->ra.ra_state = nrRA_UE_IDLE;
     nr_mac->ra.RA_active = false;
   }