fix(android): support version 12+ (#201)

Author: triniwiz

shared/App_Resources/Android/src/main/AndroidManifest.xml

@@ -29,7 +29,8 @@
 			android:configChanges="keyboard|keyboardHidden|orientation|screenSize|smallestScreenSize|screenLayout|locale|uiMode"
 			android:theme="@style/LaunchScreenTheme"
 			android:hardwareAccelerated="true"
-      		android:launchMode="singleTask">
+      		android:launchMode="singleTask"
+			android:exported="true">
 
 			<meta-data android:name="SET_THEME_ON_LAUNCH" android:resource="@style/AppTheme" />