Decouple grid size and widget preview size in WidgetsRecyclerView

Test: Manual
Bug:142148773
Change-Id: I59aa29e95ddb7d6002a88cf853bae5fcf9811154
diff --git a/src/com/android/launcher3/WidgetPreviewLoader.java b/src/com/android/launcher3/WidgetPreviewLoader.java
index 003bcc1..c6381b0 100644
--- a/src/com/android/launcher3/WidgetPreviewLoader.java
+++ b/src/com/android/launcher3/WidgetPreviewLoader.java
@@ -450,7 +450,7 @@
 
     private Bitmap generateShortcutPreview(BaseActivity launcher, ShortcutConfigActivityInfo info,
             int maxWidth, int maxHeight, Bitmap preview) {
-        int iconSize = launcher.getDeviceProfile().iconSizePx;
+        int iconSize = launcher.getDeviceProfile().allAppsIconSizePx;
         int padding = launcher.getResources()
                 .getDimensionPixelSize(R.dimen.widget_preview_shortcut_padding);