Set suw description textview to fixed id

Heavy theme supports to costomize description text style. Modify it to fixed id
that can be customized by partner resource.

Heavy theme screenshot: https://screenshot.googleplex.com/TL4M7wmTaPg
Set fixed id screenshot: https://screenshot.googleplex.com/CA6QHoNTQBZ

Test: atest
Bug: 121988926
Change-Id: I8882acd49e7d57f24afa9dd6f3e9abfd06556053

src/com/android/settings/password/ChooseLockPassword.java

@@ -443,7 +443,7 @@ public class ChooseLockPassword extends SettingsActivity {
             mSkipOrClearButton = mixin.getSecondaryButton();
             mNextButton = mixin.getPrimaryButton();
 
-            mMessage = view.findViewById(R.id.message);
+            mMessage = view.findViewById(R.id.sud_layout_description);
             if (mForFingerprint) {
                 mLayout.setIcon(getActivity().getDrawable(R.drawable.ic_fingerprint_header));
             } else if (mForFace) {