Qt: Fix QScroller interfering with Mac's touchpad

Mac's touchpad generates touch events which were conflicting with QScroller's TouchGesture, so a platform guard was added so touch scrolling is not compiled on macOS.

Author: jasaaved

pcsx2-qt/GameList/GameListWidget.cpp

@@ -271,7 +271,9 @@ void GameListWidget::initialize()
 	m_table_view->horizontalHeader()->setSectionsMovable(true);
 	m_table_view->verticalHeader()->hide();
 	m_table_view->setVerticalScrollMode(QAbstractItemView::ScrollMode::ScrollPerPixel);
+#ifndef Q_OS_MACOS
 	QScroller::grabGesture(m_table_view->viewport(), QScroller::TouchGesture);
+#endif
 
 	// Custom painter to center-align DisplayRoles (icons)
 	m_table_view->setItemDelegateForColumn(0, new GameListIconStyleDelegate(this));
@@ -330,7 +332,9 @@ void GameListWidget::initialize()
 	m_list_view->setVerticalScrollMode(QAbstractItemView::ScrollMode::ScrollPerPixel);
 	m_list_view->verticalScrollBar()->setSingleStep(15);
 	onCoverScaleChanged();
+#ifndef Q_OS_MACOS
 	QScroller::grabGesture(m_list_view->viewport(), QScroller::TouchGesture);
+#endif
 
 	connect(m_list_view->selectionModel(), &QItemSelectionModel::currentChanged, this,
 		&GameListWidget::onSelectionModelCurrentChanged);