Merge remote-tracking branch 'origin/nrUE_no_CSI_report' into integration_2025_w44 (!3728)

Fix for scenario with no CSI report configured for CSI-RS

After changes in !3714 (merged), if we select to measure RSRP on SSB and not
CSI-RS (default option) and there is a single antenna port (so no MIMO report
either) we won't schedule any CSI-RS measurements for the UE. In that case
ideally we shouldn't set do_CSIRS = 1  in configuration file but still the
option is possible. So the fix is to not perform any measurements at UE on
that CSI-RS but not asserting.

Closes #1015

openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c

@@ -1918,7 +1918,6 @@ uint8_t set_csirs_measurement_bitmap(NR_CSI_MeasConfig_t *csi_measconfig, NR_CSI
         AssertFatal(false, "Unexpected measurement report type %d\n", report_config->reportQuantity.present);
     }
   }
-  AssertFatal(meas_bitmap > 0, "Expected to have at least 1 measurement configured for CSI-RS\n");
   return meas_bitmap;
 }