Apply BitmapCachingAsset for WallpaperColorsLoader to use the catched bitmap

The catch map: https://source.corp.google.com/android/packages/apps/WallpaperPicker2/src/com/android/wallpaper/asset/BitmapCachingAsset.java;l=65?q=package:%5E(android)$%20file:(%2F%7C%5E)com%2Fandroid%2Fwallpaper%2Fasset%2FBitmapCachingAsset%5C.java$

Test: Manually
Bug: 146475648
Change-Id: Id2db71766fbc8d90fa20f6feae26c819ce398ea4
diff --git a/src/com/android/customization/picker/theme/CustomThemeNameFragment.java b/src/com/android/customization/picker/theme/CustomThemeNameFragment.java
index 6456380..28f0f1b 100644
--- a/src/com/android/customization/picker/theme/CustomThemeNameFragment.java
+++ b/src/com/android/customization/picker/theme/CustomThemeNameFragment.java
@@ -102,6 +102,7 @@
         if (mCurrentHomeWallpaper != null && mWallpaperImage.getMeasuredWidth() > 0
                 && mWallpaperImage.getMeasuredHeight() > 0) {
             WallpaperColorsLoader.getWallpaperColors(
+                    getContext(),
                     mCurrentHomeWallpaper.getThumbAsset(getContext()),
                     mWallpaperImage.getMeasuredWidth(),
                     mWallpaperImage.getMeasuredHeight(),
diff --git a/src/com/android/customization/picker/theme/ThemeFragment.java b/src/com/android/customization/picker/theme/ThemeFragment.java
index 3da41c6..180b5cb 100644
--- a/src/com/android/customization/picker/theme/ThemeFragment.java
+++ b/src/com/android/customization/picker/theme/ThemeFragment.java
@@ -179,6 +179,7 @@
         if (mCurrentHomeWallpaper != null && mWallpaperImage.getMeasuredWidth() > 0
                 && mWallpaperImage.getMeasuredHeight() > 0) {
             WallpaperColorsLoader.getWallpaperColors(
+                    getContext(),
                     mCurrentHomeWallpaper.getThumbAsset(getContext()),
                     mWallpaperImage.getMeasuredWidth(),
                     mWallpaperImage.getMeasuredHeight(),
diff --git a/src/com/android/customization/picker/theme/ThemeFullPreviewFragment.java b/src/com/android/customization/picker/theme/ThemeFullPreviewFragment.java
index 3b6923c..77642d5 100644
--- a/src/com/android/customization/picker/theme/ThemeFullPreviewFragment.java
+++ b/src/com/android/customization/picker/theme/ThemeFullPreviewFragment.java
@@ -123,6 +123,7 @@
                                        int oldLeft, int oldTop, int oldRight, int oldBottom) {
                 wallpaperPreviewer.updatePreviewCardRadius();
                 WallpaperColorsLoader.getWallpaperColors(
+                        getContext(),
                         mWallpaper.getThumbAsset(getContext()),
                         wallpaperImageView.getMeasuredWidth(),
                         wallpaperImageView.getMeasuredHeight(),