Fix `onLayout` prop for TextInput on Android

Summary:
When the `autogrow` prop was removed from `TextInput` on Android, the `_onLayout` helper method was removed. This helper method implemented the hook required to make `autogrow` work, then dispatched the `onLayout` event to the handler in `this.props`. This change points passes the `onLayout` handler from `this.props` directly to the inner component.

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I was updating copied code in react-native-windows and noticed this bug.

Run jest tests.

N/A

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  CATEGORY
[----------]        TYPE
[ CLI      ]   [-------------]      LOCATION
[ DOCS     ]   [ BREAKING    ]   [-------------]
[ GENERAL  ]   [ BUGFIX      ]   [-{Component}-]
[ INTERNAL ]   [ ENHANCEMENT ]   [ {File}      ]
[ IOS      ]   [ FEATURE     ]   [ {Directory} ]   |-----------|
[ ANDROID  ]   [ MINOR       ]   [ {Framework} ] - | {Message} |
[----------]   [-------------]   [-------------]   |-----------|

[CATEGORY] [TYPE] [LOCATION] - MESSAGE

 EXAMPLES:

 [IOS] [BREAKING] [FlatList] - Change a thing that breaks other things
 [ANDROID] [BUGFIX] [TextInput] - Did a thing to TextInput
 [CLI] [FEATURE] [local-cli/info/info.js] - CLI easier to do things with
 [DOCS] [BUGFIX] [GettingStarted.md] - Accidentally a thing/word
 [GENERAL] [ENHANCEMENT] [Yoga] - Added new yoga thing/position
 [INTERNAL] [FEATURE] [./scripts] - Added thing to script that nobody will see
-->
 [ANDROID][MINOR][BUGFIX] [TextInput] - Fix `onLayout` prop for TextInput on Android
Closes https://github.com/facebook/react-native/pull/18040

Differential Revision: D7078736

Pulled By: hramos

fbshipit-source-id: 798530729d7f0ee1ebb59f698af4d4b6ff43928b

Libraries/Components/TextInput/TextInput.js

@@ -880,7 +880,7 @@ const TextInput = createReactClass({
 
     return (
       <TouchableWithoutFeedback
-        onLayout={this._onLayout}
+        onLayout={props.onLayout}
         onPress={this._onPress}
         accessible={this.props.accessible}
         accessibilityLabel={this.props.accessibilityLabel}