如何让后台处理程序在react-native中返回主屏幕，而不是退出应用程序？

npm install @react-navigation/native

import { NavigationContainer, useNavigation } from '@react-navigation/native';
import { createStackNavigator } from '@react-navigation/stack';

const Stack = createStackNavigator();

function App() {
  return (
    <NavigationContainer>
      <Stack.Navigator>
        <Stack.Screen name="主屏幕" component={HomeScreen} />
        <Stack.Screen name="后台处理程序" component={BackgroundScreen} />
      </Stack.Navigator>
    </NavigationContainer>
  );
}

import React, { useEffect } from 'react';
import { Button } from 'react-native';
import { useNavigation } from '@react-navigation/native';

function BackgroundScreen() {
  const navigation = useNavigation();

  useEffect(() => {
    // 在后台处理程序中执行的逻辑

    // 返回主屏幕
    navigation.goBack();
  }, []);

  return (
    // 后台处理程序的屏幕内容
    <Button title="返回主屏幕" onPress={() => navigation.goBack()} />
  );
}