It's reasonable to presume this is the first incident of this type, as the AoA probes referenced are a new fit item. As such no procedure existed prior (nor was there any need for it).
So it is reasonable to think that if a serious accident had happened (crash) because of this AOA probes problem ... the "no one could imagine that" .. "completely unpredictable" would certainly be in the investigative report ... (this reminds me of something)
Airbus know how work their automation .. and so they were (are) aware of the consequence on the flight automation if this AOA probes problem happens ...
Is that they thought such an event, however, was unlikely to occur?
No procedure needed ?
Even a prayer for good luck?