Honor enableFocusRing flag for multiline textFields

[christophpurrer]

Please select one of the following

• I am removing an existing difference between facebook/react-native and microsoft/react-native-macos 👍
• I am cherry-picking a change from Facebook's react-native into microsoft/react-native-macos 👍
• I am making a fix / change for the macOS implementation of react-native
• I am making a change required for Microsoft usage of react-native

Summary

This fixes a regression introduced in #1276
We should respect the boolean flag sent from JS to enable/disable the focusRing

Changelog

[macOS] [Fixed] - Honor enableFocusRing flag for multiline textFields

Test Plan

Used this example

  {
    title: 'Multiline true',
    render: function(): React.Node {
      return (
        <TextInput
          multiline={true}
          accessibilityLabel="I am the accessibility label for text input"
        />
      );
    },
  },
  {
    title: 'Multiline true, enableFocusRing true',
    render: function(): React.Node {
      return (
        <TextInput
          multiline={true}
          enableFocusRing={true}
          accessibilityLabel="I am the accessibility label for text input"
        />
      );
    },
  },    
  {
    title: 'Multiline true, enableFocusRing false',
    render: function(): React.Node {
      return (
        <TextInput
          multiline={true}
          enableFocusRing={false}
          accessibilityLabel="I am the accessibility label for text input"
        />
      );
    },
  }, 

Before

before.mov

After

after.mov