--use-apple-networking issue in generated example

[brodycj]

When I tried --use-apple-networking with the generated example in React Native 0.63 (0.63.4) and tried building the example, it failed with the following error (looks similar to issue #422 between example app and react-native 0.64 RC):

In file included from /Users/brodybits/dev/create-react-native-module/tt-6CE20E18-547E-4A77-8D93-8D0B1CAD749C/react-native-aa-test11/example/ios/Pods/Flipper/xplat/Flipper/FlipperConnectionManagerImpl.cpp:8:
In file included from /Users/brodybits/dev/create-react-native-module/tt-6CE20E18-547E-4A77-8D93-8D0B1CAD749C/react-native-aa-test11/example/ios/Pods/Flipper/xplat/Flipper/FlipperConnectionManagerImpl.h:11:
In file included from /Users/brodybits/dev/create-react-native-module/tt-6CE20E18-547E-4A77-8D93-8D0B1CAD749C/react-native-aa-test11/example/ios/Pods/Headers/Public/Flipper-Folly/folly/io/async/EventBase.h:46:
In file included from /Users/brodybits/dev/create-react-native-module/tt-6CE20E18-547E-4A77-8D93-8D0B1CAD749C/react-native-aa-test11/example/ios/Pods/Headers/Public/Flipper-Folly/folly/io/async/AsyncTimeout.h:19:
In file included from /Users/brodybits/dev/create-react-native-module/tt-6CE20E18-547E-4A77-8D93-8D0B1CAD749C/react-native-aa-test11/example/ios/Pods/Headers/Public/Flipper-Folly/folly/io/async/EventBaseBackendBase.h:21:
In file included from /Users/brodybits/dev/create-react-native-module/tt-6CE20E18-547E-4A77-8D93-8D0B1CAD749C/react-native-aa-test11/example/ios/Pods/Headers/Public/Flipper-Folly/folly/io/async/EventUtil.h:21:
In file included from /Users/brodybits/dev/create-react-native-module/tt-6CE20E18-547E-4A77-8D93-8D0B1CAD749C/react-native-aa-test11/example/ios/Pods/Headers/Public/Flipper-Folly/folly/portability/Event.h:24:
/Users/brodybits/dev/create-react-native-module/tt-6CE20E18-547E-4A77-8D93-8D0B1CAD749C/react-native-aa-test11/example/ios/Pods/Headers/Public/libevent/event.h:44:10: fatal error: 'event2/event-config.h' file not found
#include <event2/event-config.h>
         ^~~~~~~~~~~~~~~~~~~~~~~

When I tried again with no Flipper included or enabled (see react-native-tvos/react-native-tvos#49 (comment)), I was able to build and run the example but got a JSON error message with "Domain=NSCocoaErrorDomain".

Discovered while testing PR #421 (use react-native-init-func to generate example app).