Use dark theme for alerts if device is in dark mode

Use dark theme for alerts if device is in dark mode

Test: verified using system test
Bug: 185578417
Change-Id: Ibbd3abe838cdcdf7eaf40f820329b2fde99e0779
diff --git a/src/com/android/phone/PhoneUtils.java b/src/com/android/phone/PhoneUtils.java
index c520063..35cfdd3 100644
--- a/src/com/android/phone/PhoneUtils.java
+++ b/src/com/android/phone/PhoneUtils.java
@@ -468,7 +468,8 @@
                     };
 
                 // build the dialog
-                final AlertDialog newDialog = new AlertDialog.Builder(contextThemeWrapper)
+                final AlertDialog newDialog =
+                        FrameworksUtils.makeAlertDialogBuilder(contextThemeWrapper)
                         .setMessage(text)
                         .setView(dialogView)
                         .setPositiveButton(R.string.send_button, mUSSDDialogListener)