CB-6212 iOS: fix warnings compiled under arm64 64-bit

(cherry picked from commit c9bab1f94c89e53c0ad8dbc77e1027eaa89527f1)
CB-6212 iOS: fix warnings compiled under arm64 64-bit

-one update to CDVCamera.m

(cherry picked from commit 91d6e10b29e492d8d72a2d5c759ebf7b876ecc3b)
RTC#55592 edit IBM-MODIFICATIONS file