Support mixed Richese Kull bid answers

game/engine.ts

@@ -16953,7 +16953,7 @@ function bidQuestionWindow(g: Game): boolean {
   return currentBidPromiseModeSupported(g) && phaseBidCurrentWindow(g);
 }
 function mixedBidQuestionWindow(g: Game): boolean {
-  return bidPromiseModeSupported(g) && phaseBidCurrentWindow(g);
+  return currentBidPromiseModeSupported(g) && phaseBidCurrentWindow(g);
 }
 /** A future lot is a witness only after a real funded bid has committed the
  * current lot to sale. An unbid lot ends ordinary Bidding instead of opening