Update a11y shortcut images

- Update QS, gesture, volume keys shortcut type images
- Change FAB image to animated image
- Change 2-finger double tap, triple tap animated images
- Fix the alpha value set in the FAB preview

Bug: 324312956
Test: Run and view the images
Test: atest com.android.settings.accessibility
Flag: EXEMPT low risk, resource change
Change-Id: Ic0f1953ca20fc8a3dc7b684f95ee18dae67c4f09

tests/robotests/src/com/android/settings/testutils/ImageTestUtils.java

@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settings.testutils;
-
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.drawable.Drawable;
-
-import androidx.annotation.Nullable;
-
-/**
- * Utilities for testing images within unit tests.
- */
-public class ImageTestUtils {
-
-    /** Converts the drawable object to bitmap. */
-    @Nullable
-    public static Bitmap drawableToBitmap(@Nullable Drawable drawable) {
-        if (drawable == null) {
-            return null;
-        }
-
-        final Bitmap bitmap =
-                Bitmap.createBitmap(
-                        drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),
-                        Bitmap.Config.ARGB_8888);
-        final Canvas canvas = new Canvas(bitmap);
-        drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
-        drawable.draw(canvas);
-
-        return bitmap;
-    }
-}