Make participations an array

aleksis/apps/alsijil/frontend/components/coursebook/absences/TardinessField.vue

@@ -14,8 +14,8 @@ export default {
       default: null,
       required: false,
     },
-    participation: {
-      type: Object,
+    participations: {
+      type: Array,
       required: true,
     },
   },
@@ -159,7 +159,7 @@ export default {
           {{
             $t("alsijil.personal_notes.confirm_delete_tardiness", {
               tardiness: previousValue,
-              name: participation.person.fullName,
+              name: participations.map(p => p.person.firstName).join(", "),
             })
           }}
         </template>