Fix for scrollview android
Fix for scrollview android

Summary:
Trying this again with a fresh pullrequest as the old one kept having issued due to rebasing.

Fixes #16635
the issue is a little serious if you use a scrollview which contains textinput, you will never get a chance to input something since keyboard will always be dismissed because of on-drag event if your scroll-view use the property: keyboardDismissMode ='on-drag'

verify the issue #16635 and tested this fix worked

[ANDROID] [BUGFIX] [ScrollView] - Check that isTouching is also set when dismissing keyboard with on-drag android.
Closes https://github.com/facebook/react-native/pull/18785

Differential Revision: D7569815

Pulled By: hramos

fbshipit-source-id: 2a07369297ce9ce5a7714e513ccb480ee7011a4d

pandiaraj44/react-native,javache/react-native,hoangpham95/react-native,exponent/react-native,arthuralee/react-native,janicduplessis/react-native,facebook/react-native,exponentjs/react-native,hoangpham95/react-native,javache/react-native,exponent/react-native,myntra/react-native,facebook/react-native,exponent/react-native,hammerandchisel/react-native,hammerandchisel/react-native,myntra/react-native,myntra/react-native,hoangpham95/react-native,exponent/react-native,pandiaraj44/react-native,pandiaraj44/react-native,javache/react-native,exponentjs/react-native,hammerandchisel/react-native,exponentjs/react-native,facebook/react-native,exponentjs/react-native,myntra/react-native,janicduplessis/react-native,arthuralee/react-native,pandiaraj44/react-native,exponent/react-native,hammerandchisel/react-native,arthuralee/react-native,hoangpham95/react-native,exponent/react-native,javache/react-native,hoangpham95/react-native,myntra/react-native,javache/react-native,pandiaraj44/react-native,hammerandchisel/react-native,pandiaraj44/react-native,arthuralee/react-native,facebook/react-native,janicduplessis/react-native,janicduplessis/react-native,hammerandchisel/react-native,pandiaraj44/react-native,exponent/react-native,pandiaraj44/react-native,hammerandchisel/react-native,facebook/react-native,javache/react-native,exponentjs/react-native,hoangpham95/react-native,janicduplessis/react-native,myntra/react-native,javache/react-native,facebook/react-native,arthuralee/react-native,myntra/react-native,exponentjs/react-native,hoangpham95/react-native,facebook/react-native,myntra/react-native,javache/react-native,exponentjs/react-native,exponent/react-native,facebook/react-native,janicduplessis/react-native,janicduplessis/react-native,exponentjs/react-native,myntra/react-native,hoangpham95/react-native,janicduplessis/react-native,javache/react-native,facebook/react-native,hammerandchisel/react-native