[Catalyst] Migrate AmbientDisplayAlwaysOnPreferenceController

As the preference is exported as external settings, for safety, do not
update the preference key with datastore key. As a workaround, manage a
mapping between preference hierarchy key and datastore key.

Bug: 372307567
Flag: com.android.settings.flags.catalyst_lockscreen_from_display_settings
Test: devtool
Change-Id: I56126485061859b41216cd23b8e1caf63823a1ec

src/com/android/settings/display/AmbientDisplayAlwaysOnPreferenceController.java

@@ -29,6 +29,7 @@ import androidx.preference.Preference;
 import com.android.settings.R;
 import com.android.settings.core.TogglePreferenceController;
 
+// LINT.IfChange
 public class AmbientDisplayAlwaysOnPreferenceController extends TogglePreferenceController {
 
     private final int ON = 1;
@@ -130,3 +131,4 @@ public class AmbientDisplayAlwaysOnPreferenceController extends TogglePreference
         return powerManager.isAmbientDisplaySuppressedForTokenByApp(AOD_SUPPRESSED_TOKEN, uid);
     }
 }
+// LINT.ThenChange(AmbientDisplayAlwaysOnPreference.kt)