Show paired devices on Bluetooth device slice card

- support tapping to activate for all available media devices including
  Hearing aid and Headset
- support tapping to connect for previously connected devices

Bug: 149667096
Test: robotest
Change-Id: I25f74b1b20fbb1876200a561775aa675ff60ac37
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index dc220f2..ef38240 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -123,7 +123,8 @@
                   android:label="@string/settings_label_launcher"
                   android:theme="@style/Theme.Settings.Home"
                   android:taskAffinity="com.android.settings.root"
-                  android:launchMode="singleTask">
+                  android:launchMode="singleTask"
+                  android:configChanges="keyboard|keyboardHidden">
             <intent-filter android:priority="1">
                 <action android:name="android.settings.SETTINGS" />
                 <category android:name="android.intent.category.DEFAULT" />