fix: Crash when trying to access Window/Display context in Backup & Restore

Signed-off-by: Pun Butrach <pun.butrach@gmail.com>

GITHUB_CHANGELOG.md

@@ -41,6 +41,7 @@ Compatibility list:
 * [Launcher] Crash due to incorrect thread looper for accessing cache
 * [Launcher] Make icon shapes change instantaneous
 * [Build] Update dependency to fully support 16-kb page size in Android (x86_64 architecture)
+* [Lawnchair] Crash due to unable to access Window/Display context on Android 8.0 and above
 
 ### 🥞 Development 4 Release 1 (Snapshot 10)
 

src/com/android/launcher3/preview/LauncherPreviewRenderer.java

@@ -40,6 +40,7 @@ import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.WindowManager;
 import android.widget.TextClock;
 
 import androidx.annotation.NonNull;
@@ -397,7 +398,8 @@ public class LauncherPreviewRenderer extends BaseContext
      * Returns the insets of the screen closest to the display given by the context
      */
     private static Rect getInsets(Context context) {
-        Display display = context.getDisplay();
+        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        Display display = windowManager.getDefaultDisplay();
         return DisplayController.INSTANCE.get(context).getInfo().supportedBounds.stream()
                 .filter(w -> w.rotationHint == display.getRotation())
                 .min(comparingDouble(w ->