Separates home and lock wallpaper metadata

Tests will be added as follow-ups because test architecture changes are
needed.

Bug: 267479837
Test: added as follow-ups
Change-Id: Ic849012f6f035b3189f9c9f4183fe92255df4be7
diff --git a/src/com/android/customization/module/StatsLogUserEventLogger.java b/src/com/android/customization/module/StatsLogUserEventLogger.java
index 2b6767b..9645454 100644
--- a/src/com/android/customization/module/StatsLogUserEventLogger.java
+++ b/src/com/android/customization/module/StatsLogUserEventLogger.java
@@ -144,7 +144,7 @@
         final boolean isLockWallpaperSet = mWallpaperStatusChecker.isLockWallpaperSet(mContext);
         final String homeCollectionId = mPreferences.getHomeWallpaperCollectionId();
         final String homeRemoteId = mPreferences.getHomeWallpaperRemoteId();
-        final String effects = mPreferences.getWallpaperEffects();
+        final String effects = mPreferences.getHomeWallpaperEffects();
         String homeWallpaperId = TextUtils.isEmpty(homeRemoteId)
                 ? mPreferences.getHomeWallpaperServiceName() : homeRemoteId;
         String lockCollectionId = isLockWallpaperSet ? mPreferences.getLockWallpaperCollectionId()