Improve wallpaper preview loading transition

Make WallpaperInfo parcelable

Before/after videos: https://drive.google.com/drive/folders/1-PqL0BCOuet9pnrYVphewpwAcvVoBCwo?usp=sharing

Bug: 184111918
Test: visual check
Change-Id: I46154d4a001b23ed07acf34fc5a136fb9b848122
diff --git a/src/com/android/customization/model/theme/ThemeBundledWallpaperInfo.java b/src/com/android/customization/model/theme/ThemeBundledWallpaperInfo.java
index d38790f..d3935e8 100644
--- a/src/com/android/customization/model/theme/ThemeBundledWallpaperInfo.java
+++ b/src/com/android/customization/model/theme/ThemeBundledWallpaperInfo.java
@@ -86,6 +86,7 @@
     }
 
     private ThemeBundledWallpaperInfo(Parcel in) {
+        super(in);
         mPackageName = in.readString();
         mResName = in.readString();
         mCollectionId = in.readString();
@@ -177,6 +178,7 @@
 
     @Override
     public void writeToParcel(Parcel dest, int flags) {
+        super.writeToParcel(dest, flags);
         dest.writeString(mPackageName);
         dest.writeString(mResName);
         dest.writeString(mCollectionId);