Fix the action bar shows up problem

- Hide the internal action bar.
- Refine the Utils.setupEdgeToEdge API.
- Rollback the testcases.

Bug: 328622648
Fixes: 331308440
Test: atest com.android.settings.UtilsTest SettingsActivityTest
Change-Id: I7dfbc93def3e772b57bf06b8276315cee7402a9c
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 194d017..923f5ae 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -152,7 +152,7 @@
             android:name=".SettingsApplication"
             android:label="@string/settings_label"
             android:icon="@drawable/ic_launcher_settings"
-            android:theme="@style/Theme.Settings.NoActionBar"
+            android:theme="@style/Theme.Settings"
             android:hardwareAccelerated="true"
             android:requiredForAllUsers="true"
             android:supportsRtl="true"