Bronn saves Jaime in the script.
They also had Bronn spotting a white horse to ride after nearly getting scorched by Drogon.
Bronn left the gold out of self preservation not because he had a come to Jesus moment and saw the proverbial "light".
Love Bronn but found myself rooting for Dany and the Dragon, screw the Lannisters and all who side with them.
I was hoping Jaime would've gotten roasted