Resolve "Ordering of affected lessons in register absence dialog is wrong"

Closes #342

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

@@ -38,7 +38,7 @@
             <v-expansion-panel-content>
               <v-list-item
                 v-for="lesson in person.lessons"
-                class="px-0"
+                class="py-0"
                 :key="lesson.id"
               >
                 <v-row>