Merge remote-tracking branch 'origin/mac-e2-ci' into integration_2025_w46 (!3752)

[MAC] Add UL total/used aggregated MAC stats; [E2 agent] Properly calculate
used UE PRBs in KPM; [CI] Simplify and improve the Undeploy_Object() and
implement Stop_Object()

- Create common dlul_mac_stats_t struct for both DL and UL total/used aggregated
  PRBs
- Use correct unit [%] for RRU.PrbTotDl and RRU.PrbTotUl , instead of [PRBs]
- Use correct unit [Mb] for DRB.PdcpSduVolumeDL and DRB.PdcpSduVolumeUL [kb]
- Implement Stop_Object() (docker compose stop = SIGTERM)
- Simplify the Undeploy_Object() function
- Improve the logging for Deploy/Undeploy_Object() functions
- OAI-FlexRIC CI: properly stop all the containers (one by one or a subgroup of
  running containers), and rename oai-flexric to nearRT-RIC container

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c

@@ -2455,6 +2455,7 @@ void post_process_ulsch(gNB_MAC_INST *nr_mac, post_process_pusch_t *pusch, NR_UE
   }
   UE->mac_stats.ul.current_bytes = sched_pusch->tb_size;
   UE->mac_stats.ul.current_rbs = sched_pusch->rbSize;
+  nr_mac->mac_stats.ul.used_prb_aggregate += sched_pusch->rbSize;
   sched_ctrl->last_ul_frame = sched_pusch->frame;
   sched_ctrl->last_ul_slot = sched_pusch->slot;
 
@@ -2697,6 +2698,7 @@ static void nr_ulsch_preprocessor(gNB_MAC_INST *nr_mac, post_process_pusch_t *pp
     int tda = seq_arr_dist(&nr_mac->ul_tda, seq_arr_front(&nr_mac->ul_tda), tda_info);
     AssertFatal(tda >= 0 && tda < 16, "illegal TDA index %d\n", tda);
 
+    nr_mac->mac_stats.ul.total_prb_aggregate += bw;
     int len[num_beams];
     for (int i = 0; i < num_beams; i++)
       len[i] = rb_len;