suppress JUST_PRESSED event on first frame with gamepad input

src/kiss_flixel/FlxKeyShortcutHandler.kiss

@@ -33,13 +33,17 @@
     (unless gamepadId (set gamepadId FlxInputDeviceID.ALL))
     (set buttonActions
         (for =>buttonId keyString buttonToKeyMappings
-            (.addGamepad
-                (new FlxActionDigital
-                    "${buttonId}->${keyString}"
-                    ->:Void _ (handleKey keyString))
-                buttonId
-                JUST_PRESSED 
-                gamepadId))))
+            (let [action 
+                        (.addGamepad
+                            (new FlxActionDigital
+                                "${buttonId}->${keyString}")
+                            buttonId
+                            JUST_PRESSED 
+                            gamepadId)]
+                // capture the fake JUST_PRESSED event harmlessly
+                (action.update)
+                (set action.callback ->:Void _ (handleKey keyString))
+                action))))
 
 (method :Void update []
     (doFor action buttonActions