QAbstractButton: do not steal wheel event when disabled

Fixes: QTBUG-102091
Pick-to: 6.4 6.3 6.2
Change-Id: I9a6683ad94a739c9997ebc68dd4ca8cf05438c45
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

src/widgets/widgets/qabstractbutton.cpp

@@ -904,9 +904,6 @@ bool QAbstractButton::event(QEvent *e)
         case QEvent::HoverEnter:
         case QEvent::HoverLeave:
         case QEvent::ContextMenu:
-#if QT_CONFIG(wheelevent)
-        case QEvent::Wheel:
-#endif
             return true;
         default:
             break;