Fingerprint suggestion should not be dismissed until fingerprint added

- Do not dismiss fingerprint suggestion until atleast one fingerprint is
added.

bug: 36578142
Test: robotest & manually verified.
Change-Id: I3151c9ae971666a0964be007103a9b7ad41de5ce
(cherry picked from commit 51ef801b32)

src/com/android/settings/dashboard/suggestions/SuggestionsChecks.java

@@ -68,7 +68,11 @@ public class SuggestionsChecks {
         } else if (className.equals(ScreenLockSuggestionActivity.class.getName())) {
             return isDeviceSecured();
         } else if (className.equals(FingerprintEnrollSuggestionActivity.class.getName())) {
-            return isDeviceSecured() || !isFingerprintEnabled();
+            FingerprintManager manager = Utils.getFingerprintManagerOrNull(mContext);
+            if (manager == null || !isFingerprintEnabled()) {
+                return true;
+            }
+            return manager.hasEnrolledFingerprints();
         }
 
         SuggestionFeatureProvider provider =