You need to obtain the authorisation for notifications, so use 'pp.requestPermission' to obtain the 'push_notification' authorisation.
The Push notification function in the mini-app can also include emojis.
Note: Notifications from the Mini App can only be sent if the PUSH notification receipt setting is switched on in the PayPay app's user settings; if the PUSH notification receipt setting is switched off in the PayPay app's user settings, PUSH notifications cannot be sent regardless of the settings in the Mini App. notifications cannot be sent regardless of the setting in the Mini App.