chore: update example & upgrade react-native to v0.69.3.

example/ios/example/main.m

@@ -2,7 +2,8 @@
 
 #import "AppDelegate.h"
 
-int main(int argc, char * argv[]) {
+int main(int argc, char *argv[])
+{
   @autoreleasepool {
     return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
   }