Apply daily wallpaper returns to home

- After daily wallpaper set should launch home intent for returning
  to home.
- Video:
  https://drive.google.com/file/d/17RFaF19Siik3URw7NmNieMiJC2ZWV_1m/

Bug: 200886953
Test: manual
Change-Id: Ibfb3cfe66ff631bfbb12c4dd1c14030aad9a170f
diff --git a/src/com/android/wallpaper/picker/individual/IndividualPickerFragment.java b/src/com/android/wallpaper/picker/individual/IndividualPickerFragment.java
index 4436304..d00bc26 100755
--- a/src/com/android/wallpaper/picker/individual/IndividualPickerFragment.java
+++ b/src/com/android/wallpaper/picker/individual/IndividualPickerFragment.java
@@ -92,6 +92,7 @@
 import com.android.wallpaper.picker.WallpapersUiContainer;
 import com.android.wallpaper.picker.individual.SetIndividualHolder.OnSetListener;
 import com.android.wallpaper.util.DiskBasedLogger;
+import com.android.wallpaper.util.LaunchUtils;
 import com.android.wallpaper.util.SizeCalculator;
 import com.android.wallpaper.widget.WallpaperInfoView;
 import com.android.wallpaper.widget.WallpaperPickerRecyclerViewAccessibilityDelegate;
@@ -860,6 +861,9 @@
 
                                 activity.setResult(Activity.RESULT_OK);
                                 activity.finish();
+
+                                // Go back to launcher home.
+                                LaunchUtils.launchHome(appContext);
                             } else if (mFormFactor == FormFactorChecker.FORM_FACTOR_DESKTOP) {
                                 mAdapter.updateSelectedTile(SPECIAL_FIXED_TILE_ADAPTER_POSITION);
                             }