SI-2170 FE Warnung beim Auswahl gleiche Stationen

Signed-off-by: Dimitrios Chalepakis <dimitrios.chalepakis@pta.de>

projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts

diff --git a/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts b/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts
index f314ac7..5ad5741 100644
--- a/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts
+++ b/projects/grid-failure-information-app/src/app/pages/grid-failure/grid-failure-details/grid-failure-details.sandbox.ts
@@ -591,9 +591,10 @@
       return;
     }
     if (
-      this.currentFormState.value.stationIds &&
-      unbox(this.currentFormState.value.stationIds) &&
-      unbox(this.currentFormState.value.stationIds).some(id => id === this._selectedStation.id)
+      (this.currentFormState.value.stationIds &&
+        unbox(this.currentFormState.value.stationIds) &&
+        unbox(this.currentFormState.value.stationIds).some(id => id === this._selectedStation.id)) ||
+      (this.gridFailureStations && this.gridFailureStations.some(station => station.id === this._selectedStation.id))
     ) {
       this._utilService.displayNotification('SelectedStationAlreadyAssigned', 'alert');
       return;