Update theme for ChannelPanelActivity

- set correct switch style
- update background color

Fixes: 238845212
Test: visual
Change-Id: Iaf54fa5d98f7527543fc02d1108cbafe851bd574

AndroidManifest.xml

@@ -3717,7 +3717,7 @@
         <!-- Show channel-level notification settings (channel passed in as extras) -->
         <activity android:name=".notification.app.ChannelPanelActivity"
                   android:label="@string/notification_channel_title"
-                  android:theme="@style/Theme.Panel"
+                  android:theme="@style/Theme.Panel.Material"
                   android:excludeFromRecents="true"
                   android:configChanges="keyboardHidden|screenSize"
                   android:exported="true">

res/drawable/button_border_selected.xml

@@ -15,10 +15,7 @@
   limitations under the License.
   -->
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
-       xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
        android:shape="rectangle">
-    <solid
-        android:color="?androidprv:attr/materialColorSurfaceContainer" />
     <stroke
         android:width="2dp"
         android:color="?android:attr/colorAccent"/>

res/drawable/button_border_unselected.xml

@@ -18,7 +18,7 @@
        android:shape="rectangle">
     <stroke
         android:width="1dp"
-        android:color="@color/notification_importance_button_unselected"/>
+        android:color="?android:attr/colorAccent"/>
 
     <corners android:radius="@dimen/rect_button_radius" />
 </shape>

res/values/themes.xml

@@ -227,6 +227,9 @@
         <item name="android:fontFamily">@*android:string/config_headlineFontFamilyMedium</item>
     </style>
 
+    <style name="Theme.Panel.Material" parent="Theme.Panel" >
+        <item name="android:switchStyle">@style/Switch.SettingsLib</item>
+    </style>
     <!-- Material theme for the pages containing TabLayout and ViewPager -->
     <style name="Theme.TabTheme" parent="@style/Theme.MaterialComponents.DayNight">
         <item name="colorPrimary">@*android:color/edge_effect_device_default_light</item>