UPBGE: Fix mouse sensor.

Previously the conversion of the sensors events mode to the input enum was
using a conversion table, but this table was lacking an item which shifted
all the other items.

The shift is removed by adding the missing elements.

source/gameengine/GameLogic/SCA_MouseSensor.cpp

@@ -110,6 +110,7 @@ bool SCA_MouseSensor::Evaluate()
 	case KX_MOUSESENSORMODE_WHEELDOWN:
 		{
 			static const SCA_IInputDevice::SCA_EnumInputs convertTable[KX_MOUSESENSORMODE_MAX] = {
+				SCA_IInputDevice::NOKEY, // KX_MOUSESENSORMODE_NODEF
 				SCA_IInputDevice::LEFTMOUSE, // KX_MOUSESENSORMODE_LEFTBUTTON
 				SCA_IInputDevice::MIDDLEMOUSE, // KX_MOUSESENSORMODE_MIDDLEBUTTON
 				SCA_IInputDevice::RIGHTMOUSE, // KX_MOUSESENSORMODE_RIGHTBUTTON