fix(tasks): update sub task relations in list view after they were created

Resolves https://kolaente.dev/vikunja/frontend/issues/3853

src/views/project/ProjectList.vue

@@ -241,9 +241,9 @@ function updateTaskList(task: ITask) {
 		loadTasks()
 	}
 	else {
-		tasks.value = [
+		allTasks.value = [
 			task,
-			...tasks.value,
+			...allTasks.value,
 		]
 	}