Implement UI for warn-on-launch

Bug: 63909431
Test: atest CtsHarmfulAppWarningHostTestCases
Change-Id: Icabe31f3fb04692bac0313cbeb1cafb64388d5f1
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index ea791a5..9db8097 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -3958,6 +3958,7 @@
                   android:theme="@style/Theme.DeviceDefault.Light.Dialog.Alert"
                   android:excludeFromRecents="true"
                   android:process=":ui"
+                  android:label="@string/harmful_app_warning_title"
                   android:exported="false">
         </activity>