GH#1395 Fixes caret changing sizes if text field is empty

[ospfranco]

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

Takes care of #1395

Changelog

[General] [Fixed] - Fixes caret changing sizes if text field is empty

Test Plan

Set a larger font size on a single line text field and watch the caret change sizes when the field is empty

[Saadnajmi]

Thanks for the fix! This should make it to our 0.71 release. I think this will fix this for both Paper and Fabric. We'll see when Fabric is actually usable :)