Summary:
We provided `ReactNetworkForceWifiOnly` in https://github.com/facebook/react-native/pull/24242, but it's a string type, actually the value only YES or NO, so let's change it to Boolean type, we can benefit from:
1. Users don't need to type string `YES`, just select bool YES or NO directly by click the button:
<img width="789" alt="image" src="https://user-images.githubusercontent.com/5061845/57634311-a8af7400-75d7-11e9-9f8a-ebf865d672e3.png">
2. Don't need to do string compare.
3. More looks what it should looks, Boolean is the Boolean. :)
cc. cpojer ericlewis .
[iOS] [Changed] - Change ReactNetworkForceWifiOnly from String to Boolean
Pull Request resolved: https://github.com/facebook/react-native/pull/24829
Differential Revision: D15323685
Pulled By: cpojer
fbshipit-source-id: c626d048d0cbea46d45f232906fd3ac32a412741
916186a7e6
