Summary:
Currently, we pick the max size of text view's contentSize and placeholder's size, actually, if placeholder is be hidden, we should only return text view's contentSize.
[iOS] [Fixed] - Fixed wrong contentSize calculation when placeholder is hidden in multiline text input
Pull Request resolved: https://github.com/facebook/react-native/pull/23683
Differential Revision: D14255915
Pulled By: cpojer
fbshipit-source-id: 198faa7e1c5657371eb920973345194aedf72e41