Fix null values in recommencation label

Fixes an issue that was showing empty values when setting
a recommendation

client/src/app/site/motions/models/view-motion.ts

@@ -47,7 +47,7 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
     }
 
     public get possibleRecommendations(): ViewState[] {
-        return this.workflow ? this.workflow.states.filter(state => state.recommendation_label !== undefined) : null;
+        return this.workflow ? this.workflow.states.filter(state => state.recommendation_label) : [];
     }
 
     public get agenda_type(): number | null {

client/src/app/site/motions/modules/motion-detail/components/motion-detail/motion-detail.component.html

@@ -274,7 +274,14 @@
         </div>
 
         <!-- Recommendation -->
-        <div *ngIf="(perms.isAllowed('change_metadata') || motion.recommendation) && recommender && !editMotion">
+        <div
+            *ngIf="
+                (perms.isAllowed('change_metadata') || motion.recommendation) &&
+                recommender &&
+                motion.possibleRecommendations.length &&
+                !editMotion
+            "
+        >
             <os-extension-field
                 title="{{ recommender }}"
                 [inputValue]="recommendationStateExtension"