uni-app uni-pay不支持微信支付的V3微信支付公钥支付

| 开发环境 | 版本号 | 项目创建方式 |
|----------|--------|--------------|
| uniCloud/App | - | - |

# 示例代码：

```javascript
const unipayIns = unipay.initWeixinV3({
appId: 'wxfc1b9d0344558071',
mchId: '1714932259',
v3Key: 'QWERTYUOPASDFGHJKLZXCVBNM1234567',
appCertPath: path.resolve(__dirname, './cert/cert.pem'),
appPrivateKeyPath: path.resolve(__dirname, './cert/appPrivateKeyPath.pem')
})
let getOrderData = await unipayIns.getOrderInfo({
openid: user.user_openid,
body: name,
outTradeNo: order_id,
totalFee: parseInt(orderTotalPrice * 100),
tradeType: 'JSAPI',
notifyUrl: ''
})

操作步骤：

const unipayIns = unipay.initWeixinV3({
appId: 'wxfc1b9d0344558071',
mchId: '1714932259',
v3Key: 'QWERTYUOPASDFGHJKLZXCVBNM1234567',
appCertPath: path.resolve(__dirname, './cert/cert.pem'),
appPrivateKeyPath: path.resolve(__dirname, './cert/appPrivateKeyPath.pem')
})
let getOrderData = await unipayIns.getOrderInfo({
openid: user.user_openid,
body: name,
outTradeNo: order_id,
totalFee: parseInt(orderTotalPrice * 100),
tradeType: 'JSAPI',
notifyUrl: ''
})

预期结果：

const unipayIns = unipay.initWeixinV3({
appId: 'wxfc1b9d0344558071',
mchId: '1714932259',
v3Key: 'QWERTYUOPASDFGHJKLZXCVBNM1234567',
appCertPath: path.resolve(__dirname, './cert/cert.pem'),
appPrivateKeyPath: path.resolve(__dirname, './cert/appPrivateKeyPath.pem')
})
let getOrderData = await unipayIns.getOrderInfo({
openid: user.user_openid,
body: name,
outTradeNo: order_id,
totalFee: parseInt(orderTotalPrice * 100),
tradeType: 'JSAPI',
notifyUrl: ''
})

实际结果：

const unipayIns = unipay.initWeixinV3({
appId: 'wxfc1b9d0344558071',
mchId: '1714932259',
v3Key: 'QWERTYUOPASDFGHJKLZXCVBNM1234567',
appCertPath: path.resolve(__dirname, './cert/cert.pem'),
appPrivateKeyPath: path.resolve(__dirname, './cert/appPrivateKeyPath.pem')
})
let getOrderData = await unipayIns.getOrderInfo({
openid: user.user_openid,
body: name,
outTradeNo: order_id,
totalFee: parseInt(orderTotalPrice * 100),
tradeType: 'JSAPI',
notifyUrl: ''
})

bug描述：

uni-pay不支持微信支付的V3微信支付公钥支付，微信新开的商户都拉不起来支付