Fix the launch crash on Android under NativePHP v4

[Ikromjon1998]

What

Fixes a crash at app launch on Android under NativePHP for Mobile v4. It affects 1.5.0-beta.1, the first version that can be installed on v4.

java.lang.IllegalStateException: LifecycleOwner com.nativephp.mobile.ui.MainActivity is attempting to
register while current state is RESUMED. LifecycleOwners must call register before they are STARTED.
    at androidx.activity.ComponentActivity.registerForActivityResult
    at com.nativephp.documentscanner.DocumentScannerFunctions.registerLauncher
    at com.nativephp.documentscanner.DocumentScannerFunctions$Scan.<init>
    at ...registerPluginBridgeFunctions
    at com.nativephp.mobile.ui.MainActivity.initializeEnvironmentAsync

Why

NativePHP v3 calls registerBridgeFunctions() in MainActivity.onCreate. v4 moved it into initializeEnvironmentAsync, on a background thread after the activity has resumed. The Scan bridge function registered its result launcher with registerForActivityResult() in its constructor, and Android only allows that call before the activity is started.

The launcher is now registered with the activity's ActivityResultRegistry directly, which is valid at any point in the lifecycle. It is also re-registered when the activity instance changes.

Verified

On an Android 16 (API 36) emulator, in a Laravel 13 app with this plugin:

	nativephp/mobile 4.6.0	3.3.9
App launches, before this change	crashes with the trace above	not run
App launches, with this change	yes	yes
"Scan" opens the Google scanner, with this change	yes	not run

The emulator image cannot download the ML Kit scanner module, so the scan itself stops at Google's download screen. A complete scan still needs a physical device.

composer check (133 tests, Pint, Rector, PHPStan) and ktlint pass.

Release

The changelog entry is 1.5.0-beta.2, replacing beta.1.