textTransform='uppercase' doesn't work

[chrisglein]

Environment

npx react-native --version
4.10.1
npx react-native run-windows --info

  System:
    CPU: (8) x64 Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
    Memory: 3.66 GB / 15.92 GB
  Binaries:
    Node: 12.10.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.17.3 - C:\Program Files (x86)\Yarn\bin\yarn.CMD
    npm: 6.10.3 - C:\Program Files\nodejs\npm.CMD
  npmPackages:
    react: ^16.13.1 => 16.13.1
    react-native: ^0.62.0-0 => 0.62.2
    react-native-windows: ^0.62.0-0 => 0.62.2
  Installed UWP SDKs:
    10.0.14393.0
    10.0.17763.0
    10.0.18362.0

reg query "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock
    AllowDevelopmentWithoutDevLicense    REG_DWORD    0x1
    AllowAllTrustedApps    REG_DWORD    0x1

Steps To Reproduce

Use the textTransform property.

Expected Results

Text content should be made uppercase (this works on iOS, Android, and react-native-web).
Note this property is called out in the mega-issue #2207, but mostly that's about theming, not about not implemented Text properties.

Snack, code example, screenshot, or link to a repository:

Snack

<Text style={styles.h1}>Some Content</Text>

const styles = StyleSheet.create({
  h1: {
    fontSize: 24,
    textTransform: 'uppercase',
  },
});