Android: Enable free form window

for some some reason, we need this despite it being the default.

(cherry picked from commit 0fc095c4)

packaging/android/apk/AndroidManifest.xml

@@ -8,6 +8,7 @@
                   android:name="org.krita.android.MainActivity"
                   android:label="Krita"
                   android:screenOrientation="unspecified"
+                  android:resizeableActivity="true"
                   android:launchMode="singleTask">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>