fix(task): show new due date immediately after deferring in list view

frontend/src/components/tasks/partials/SingleTaskInProject.vue

@@ -95,6 +95,7 @@
 						<DeferTask
 							v-if="isOpen"
 							v-model="task"
+							@update:modelValue="deferTaskUpdate"
 						/>
 					</template>
 				</Popup>
@@ -293,6 +294,8 @@ useIntervalFn(updateDueDate, 60_000, {
 })
 onMounted(updateDueDate)
 
+watch(() => task.value.dueDate, updateDueDate)
+
 let oldTask
 
 async function markAsDone(checked: boolean, wasReverted: boolean = false) {