Make work profile sounds section as its own entry

Also rephrase the strings by request.

Bug: 174964721
Test: manual
Change-Id: I760249cd48832f2739ab7ca33706cd11dd34a6b5

src/com/android/settings/notification/WorkSoundsPreferenceController.java

@@ -0,0 +1,35 @@
+/*
+ * 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.notification;
+
+import android.content.Context;
+
+import com.android.settings.core.BasePreferenceController;
+
+/** This controller manages the work profile sounds preference. */
+public class WorkSoundsPreferenceController extends BasePreferenceController {
+
+    public WorkSoundsPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return SoundWorkSettings.isSupportWorkProfileSound(mContext) ? AVAILABLE
+                : DISABLED_FOR_USER;
+    }
+}