Summary:
Resolve React-RCTText warning: `'UIKeyboardTypeASCIICapableNumberPad' is only available on iOS 10.0 or newer`
## Changelog
[iOS] [Fixed] - Resolve React-RCTText Xcode warning
Pull Request resolved: https://github.com/facebook/react-native/pull/28054
Test Plan: Build template, React-RCTText should no longer throw a warning.
Differential Revision: D19887063
Pulled By: hramos
fbshipit-source-id: 3437ee993babd7cdaec259af24526e197acb64bb