Update the dark theme and EDT description

Bug: 315012822
Test: Manually. See screenshot in the bug
Test: atest DarkModeTopIntroPreferenceControllerTest
Flag: android.view.accessibility.force_invert_color
Change-Id: I94ba1af4e49c461978fc6b31e82e44c88ba19109

src/com/android/settings/display/darkmode/DarkModeTopIntroPreferenceController.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.display.darkmode;
+
+import android.content.Context;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settingslib.widget.TopIntroPreference;
+
+/**
+ * Controller of the top info preference in the Dark Mode settings page.
+ *
+ * This should be removed after the flag android.view.accessibility.force_invert_color is launched.
+ */
+public class DarkModeTopIntroPreferenceController extends BasePreferenceController {
+    @Nullable private TopIntroPreference mPreference;
+
+    public DarkModeTopIntroPreferenceController(
+            @NonNull Context context,
+            @NonNull String preferenceKey) {
+        super(context, preferenceKey);
+
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE_UNSEARCHABLE;
+    }
+
+    @Override
+    public void displayPreference(@NonNull PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = screen.findPreference(getPreferenceKey());
+        if (android.view.accessibility.Flags.forceInvertColor()) {
+            mPreference.setTitle(R.string.dark_ui_text_force_invert);
+        } else {
+            mPreference.setTitle(R.string.dark_ui_text);
+        }
+    }
+}