Disallow split-screen for WallpaperPicker

There's no good use case for split-screen when
PreviewActivity is already full screen and it causes
other issues.

Fixes: 141968921
Change-Id: Ia79bde4c0428f15e41a1d95087d6ad3c6bcb5fad
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 1415226..6d04f6f 100755
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -37,7 +37,7 @@
     <activity android:name="com.android.wallpaper.picker.TopLevelPickerActivity"
         android:label="@string/app_name"
         android:theme="@style/WallpaperTheme"
-        android:resizeableActivity="true">
+        android:resizeableActivity="false">
       <intent-filter>
         <action android:name="android.intent.action.SET_WALLPAPER"/>
         <category android:name="android.intent.category.DEFAULT"/>
@@ -57,7 +57,7 @@
     <activity android:name="com.android.wallpaper.picker.individual.IndividualPickerActivity"
         android:label="@string/app_name"
         android:theme="@style/WallpaperTheme"
-        android:resizeableActivity="true"
+        android:resizeableActivity="false"
         android:parentActivityName="com.android.wallpaper.picker.TopLevelPickerActivity">
     </activity>