I think I'm the only one on here who doesn't have Facebook so luckily I do not face this issue.
As a workaround you could press and hold the notification the turn off that notification channel (if it is separate to the other Facebook notifications for messages etc)
Ok what happens if you now press the 'Clear' button at the bottom of the notification tray.
Failing that clear the cache on the Play store app
That seems like a really annoying bug 😶
Please be sure to send us an error report via Beta Feedback option in Samsung Members app, when it happens again!