feat(brightness suw): add brightness preferences in suw

Add brightness level and auto brightness preference in
accessibility_settings_for_setup_wizard.xml. Since the flagging has not
be supported yet for non-Manifest resources, for now we add the
preferences by default, and update the preferece availablity status in
each preference controllers based on the flag.

Bug: 311093618
Flag: ACONFIG com.android.settings.accessibility.add_brightness_settings_in_suw DEVELOPMENT
Test: manually
      atest AccessibilitySettingsForSetupWizardTest
      atest AutoBrightnessPreferenceFragmentForSetupWizardTest
      atest AutoBrightnessPreferenceControllerTest
      atest BrightnessLevelPreferenceControllerTest
Change-Id: I350d99138bdd14bf28828a39e42f707b5b1066c1

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

@@ -25,6 +25,7 @@ import android.provider.Settings;
 import androidx.preference.Preference;
 
 import com.android.settings.R;
+import com.android.settings.accessibility.Flags;
 import com.android.settings.core.TogglePreferenceController;
 import com.android.settingslib.PrimarySwitchPreference;
 
@@ -33,10 +34,16 @@ public class AutoBrightnessPreferenceController extends TogglePreferenceControll
     private final String SYSTEM_KEY = SCREEN_BRIGHTNESS_MODE;
     private final int DEFAULT_VALUE = SCREEN_BRIGHTNESS_MODE_MANUAL;
 
+    private boolean mInSetupWizard;
+
     public AutoBrightnessPreferenceController(Context context, String key) {
         super(context, key);
     }
 
+    public void setInSetupWizard(boolean inSetupWizard) {
+        mInSetupWizard = inSetupWizard;
+    }
+
     @Override
     public boolean isChecked() {
         return Settings.System.getInt(mContext.getContentResolver(),
@@ -53,10 +60,14 @@ public class AutoBrightnessPreferenceController extends TogglePreferenceControll
     @Override
     @AvailabilityStatus
     public int getAvailabilityStatus() {
-        return mContext.getResources().getBoolean(
-                com.android.internal.R.bool.config_automatic_brightness_available)
-                ? AVAILABLE_UNSEARCHABLE
-                : UNSUPPORTED_ON_DEVICE;
+        if (!mContext.getResources().getBoolean(
+                com.android.internal.R.bool.config_automatic_brightness_available)) {
+            return UNSUPPORTED_ON_DEVICE;
+        }
+        if (mInSetupWizard && !Flags.addBrightnessSettingsInSuw()) {
+            return CONDITIONALLY_UNAVAILABLE;
+        }
+        return AVAILABLE_UNSEARCHABLE;
     }
 
     @Override