Go to STATE_AUTH_STARTED_UI_SHOWING if UI was already showing

This can happen if the retry button was pressed

Bug: 179955752
Test: atest CtsBiometricsTestCases
Test: atest com.android.server.biometrics
Change-Id: Id632da3c13c81f8eee905cf0f00e7cb8cfaabaf3

services/core/java/com/android/server/biometrics/AuthSession.java

@@ -257,11 +257,15 @@ public final class AuthSession implements IBinder.DeathRecipient {
                             mUserId,
                             mOpPackageName,
                             mOperationId);
+                    mState = STATE_AUTH_STARTED;
                 } catch (RemoteException e) {
                     Slog.e(TAG, "Remote exception", e);
                 }
+            } else {
+                // The UI was already showing :)
+                mState = STATE_AUTH_STARTED_UI_SHOWING;
             }
-            mState = STATE_AUTH_STARTED;
+
         }
     }