Show only dialog presentations in the fill dialog

Remove fallback to dropdown presentation if there is no dialog
presentation. So the fill dialog will only shows suggestions
that is exactly set a dialog presentation.

Bug: 219956625
Test: Manual
Change-Id: I5665e98b17dc2dcff252af3579a69e9a832f8385
diff --git a/services/autofill/java/com/android/server/autofill/ui/DialogFillUi.java b/services/autofill/java/com/android/server/autofill/ui/DialogFillUi.java
index e122993..75d9b7e 100644
--- a/services/autofill/java/com/android/server/autofill/ui/DialogFillUi.java
+++ b/services/autofill/java/com/android/server/autofill/ui/DialogFillUi.java
@@ -275,12 +275,10 @@
             if (index >= 0) {
                 RemoteViews presentation = dataset.getFieldDialogPresentation(index);
                 if (presentation == null) {
-                    Slog.w(TAG, "fallback to presentation");
-                    presentation = dataset.getFieldPresentation(index);
-                }
-                if (presentation == null) {
-                    Slog.w(TAG, "not displaying UI on field " + focusedViewId + " because "
-                            + "service didn't provide a presentation for it on " + dataset);
+                    if (sDebug) {
+                        Slog.w(TAG, "not displaying UI on field " + focusedViewId + " because "
+                                + "service didn't provide a presentation for it on " + dataset);
+                    }
                     continue;
                 }
                 final View view;