fix: add android:autoVerify="true" for Android App Links in Expo plugin

[subhankarmaiti]

This PR adds automatic verification support for Android App Links when using the Expo plugin with customScheme: "https" (or "http").

The plugin now automatically adds android:autoVerify="true" to the intent-filter in the Android manifest when App Links are configured, enabling automatic verification by Android and eliminating the need for users to manually select the Auth0 domain in their device's "Open by default" settings.

Changes

• Plugin Enhancement: Modified addAndroidAuth0Manifest function in src/plugin/withAuth0.ts to detect when customScheme is set to "https" or "http" and automatically add android:autoVerify="true" to the intent-filter
• Tests: Added comprehensive test cases to verify:
  • android:autoVerify="true" is added when customScheme is "https"
  • android:autoVerify="true" is added when customScheme is "http"
  • android:autoVerify is NOT added for custom schemes (non-http/https)
• Documentation: Updated README.md to document the new behavior and inform users that the plugin automatically enables App Links verification

Testing

• ✅ All existing tests pass
• ✅ New tests added for App Links auto-verification behavior
• ✅ Build completes successfully

How to Use

When configuring the Expo plugin for Android App Links, simply set customScheme: "https":

{
  "expo": {
    "plugins": [
      [
        "react-native-auth0",
        {
          "domain": "{DOMAIN}",
          "customScheme": "https"
        }
      ]
    ]
  }
}

Fixes #1354