Summary:
There's been a bug on iOS and iPad that the position of an action sheet using UIActionController isn't updated if the position of its anchor view changes due to rotating the device. A common scenario would be, presenting an action sheet from a right bar button item. Rotating the device will most likely change the bar button's X coordinate. The action sheets arrow would still point to the old position due to how it has been implemented so far.
I used also reduced some code duplication between `-showActionSheetWithOptions` and `-showShareActionSheetWithOptions:` while at it.
Changelog:
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[iOS] [Fixed] - Action Sheet position after rotation on tablet
Pull Request resolved: https://github.com/facebook/react-native/pull/22738
Differential Revision: D13582810
Pulled By: PeteTheHeat
fbshipit-source-id: a93065284b02efc41ae7378465521330a828a126
ac39795948