Sergei Dryganets 46cc4907e3 ClassCastException fix: getText() returns CharSequence not Spanned.
Summary:
ClassCastException fix: getText() returns CharSequence not Spanned.
From the other hand, EditTexts getText method returns Editable which extends Spanned.
This commit fixes two similar bugs one in flat TextView and another in standard TextView.
Also, it removes redundant checks in the ReactEditText.

Application without this change sporadically crashes with the following stack trace:
```
java.lang.ClassCastException: java.lang.String cannot be cast to android.text.Spanned
	at com.facebook.react.views.text.ReactTextView.reactTagForTouch(ReactTextView.java:195)
	at com.facebook.react.uimanager.TouchTargetHelper.getTouchTargetForView(TouchTargetHelper.java:269)
	at com.facebook.react.uimanager.TouchTargetHelper.findTargetTagAndCoordinatesForTouch$58866680(TouchTargetHelper.java:101)
	at com.facebook.react.uimanager.JSTouchDispatcher.handleTouchEvent(JSTouchDispatcher.java:77)
	at com.facebook.react.ReactRootView.dispatchJSTouchEvent(ReactRootView.java:151)
	at com.facebook.react.ReactRootView.onInterceptTouchEvent(ReactRootView.java:127)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2110)

```
Closes https://github.com/facebook/react-native/pull/15452

Differential Revision: D6775986

Pulled By: hramos

fbshipit-source-id: 6de929937cbbb3e7bd98a708a40700f883cbaef0
2018-01-22 15:15:23 -08:00
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