This specific solar field is Ashalim power station, located deep in the Negev desert. It is nowhere near Erez crossing and it has nothing to do with Gaza.
Russian narrative when Su-57 was in development: Oh, it is the best in world! A game-changer! Stealthy beyond imagination!
Russian narrative when Su-57 is canceled: We didn't really want it, and we didn't really need it, we are the best already, next question please.