[Fabric] Fix NewArchitectureExample to work w/ Fabric shims

[shwanton]

Description

#1520 added the NewArchitectureExample to RNTester. This component should use the Fabric shims instead of calling UIView directly.

Version

main

Output of npx react-native info

System:
    OS: macOS 12.6.1
    CPU: (10) arm64 Apple M1 Pro
    Memory: 112.22 MB / 32.00 GB
    Shell: 5.8.1 - /bin/zsh
  Binaries:
    Node: 16.15.1 - ~/.asdf/installs/nodejs/16.15.1/bin/node
    Yarn: 1.22.19 - ~/homebrew/bin/yarn
    npm: 8.11.0 - ~/.asdf/plugins/nodejs/shims/npm
    Watchman: 20230123 - /usr/local/bin/watchman
  Managers:
    CocoaPods: 1.11.3 - /Users/shawndempsey/.asdf/shims/pod
  SDKs:
    iOS SDK:
      Platforms: DriverKit 22.2, iOS 16.2, macOS 13.1, tvOS 16.1, watchOS 9.1
    Android SDK:
      API Levels: 31, 33
      Build Tools: 31.0.0, 33.0.0
      System Images: android-31 | Google APIs ARM 64 v8a, android-33 | Google APIs ARM 64 v8a
      Android NDK: Not Found
  IDEs:
    Android Studio: 2021.2 AI-212.5712.43.2112.8512546
    Xcode: 14.2/14C18 - /usr/bin/xcodebuild
  Languages:
    Java: 1.8.0_302 - /usr/local/bin/javac
  npmPackages:
    @react-native-community/cli: ^7.0.1 => 7.0.1 
    react: 17.0.2 => 17.0.2 
    react-native: Not Found
    react-native-macos: Not Found
  npmGlobalPackages:
    *react-native*: Not Found

Steps to reproduce

USE_FABRIC=1 bundle exec pod install --verbose

Build and navigate to "New Architecture Example"

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

No response

[github-actions]

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