feat(deps): Upgrade React Native to 0.80.1

[subhankarmaiti]

This PR upgrades the project and its example app from React Native 0.79.2 to 0.80.1.

Key Changes

• Dependencies:
  • Upgraded react-native to 0.80.1 and react to 19.1.0.
  • Updated all related dev dependencies like @react-native-community/cli and @react-native/babel-preset.
• Android:
  • Upgraded Gradle to 8.14.1 and Kotlin to 2.1.20.
  • Updated MainApplication.kt to use the modern loadReactNative entry point.
• iOS:
  • Updated Podfile.lock with all pod dependencies compatible with RN 0.80.1.
• Tooling:
  • Added a standard example/tsconfig.json required by the new React Native version.
• Lockfile:
  • Updated yarn.lock to reflect all dependency changes.