Clean up some search nonIndexableKeys.

- Make the entire gesture setting page unsearchable. This is safe
  because each row in gesture setting page lead to a child page, we are
  only removing duplicates.
- Make the pref controller for System -> gesture return
  AVILABLE_UNSEARCHABLE so it's also suppressed.
- Suppres the parent page for adaptive brightness.

Bug: 72748524
Test: manual
Change-Id: Id7317f5f126af88b1bde8d87b8a206d9909df904

src/com/android/settings/gestures/GesturesSettingPreferenceController.java

@@ -19,7 +19,6 @@ package com.android.settings.gestures;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.provider.Settings;
-import androidx.annotation.NonNull;
 
 import com.android.internal.hardware.AmbientDisplayConfiguration;
 import com.android.settings.R;
@@ -30,6 +29,8 @@ import com.android.settingslib.core.AbstractPreferenceController;
 import java.util.ArrayList;
 import java.util.List;
 
+import androidx.annotation.NonNull;
+
 public class GesturesSettingPreferenceController extends BasePreferenceController {
     private final AssistGestureFeatureProvider mFeatureProvider;
     private List<AbstractPreferenceController> mGestureControllers;
@@ -51,7 +52,7 @@ public class GesturesSettingPreferenceController extends BasePreferenceControlle
         for (AbstractPreferenceController controller : mGestureControllers) {
             isAvailable = isAvailable || controller.isAvailable();
         }
-        return isAvailable ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+        return isAvailable ? AVAILABLE_UNSEARCHABLE : UNSUPPORTED_ON_DEVICE;
     }
 
     /**