fix(android): improve default handling of orientation changes (#2208)

Snaps the activity props to what is currently in the
[template](https://github.com/react-native-community/template/blob/0.75-stable/template/android/app/src/main/AndroidManifest.xml).

Author: tido64

android/app/src/main/AndroidManifest.xml

@@ -23,7 +23,12 @@
     >
         <activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />
 
-        <activity android:name="com.microsoft.reacttestapp.MainActivity" android:exported="true">
+        <activity
+            android:name="com.microsoft.reacttestapp.MainActivity"
+            android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize|uiMode"
+            android:windowSoftInputMode="adjustResize"
+            android:exported="true"
+        >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />