title: React Native multi line TextInput, text is centered
body: <p>So when using, text input with multiline=true, I have this issue where the text is vertically centered instead of being pushed to the top.</p>
  
  <p>This issue happens on both ios and android, except android has another issue where, when multiple lines are entered, they get letterboxed to the height of 1 line.</p>
  
  <p>I'd like to point out, I have tried adding <code>textAlignVertical: 'top'</code> to the style of the textinput</p>
  
  <p>Code: (I have this as a seperate copmonent as I use it in forms with form text but all parameters are passed something)</p>
  
  <pre><code>    &lt;TextInput
              style={styles.input}
              value={value}
              autoComplete={autoComplete}
              autoCapitalize={autoCapitalize}
              placeholder={placeholder}
              secureTextEntry={secureTextEntry}
              keyboardType={keyboardType}
              returnKeyType={returnKeyType}
              autoFocus={autoFocus}
              onChangeText={onChangeText}
              onSubmitEditing={onSubmitEditing}
              multiline={multiline || false}
              ref={(r) =&gt; { inputRef &amp;&amp; inputRef(r); }}
      /&gt;
  </code></pre>
  
  <p>styles:</p>
  
  <pre><code>input: {
      paddingRight: 10,
      lineHeight: 23,
      flex: 2,
      textAlignVertical: 'top'
  },
  </code></pre>
  
  <p><strong>ios screenshot</strong>
  <img src="https://i.stack.imgur.com/aSlC5.png"></p>
  
  <p><strong>android screenshot</strong>
  <img src="https://i.stack.imgur.com/e2PkA.png"></p>