Qt: force hover event handling for flow widget items

Fixes hover movies for stylesheets that didn't have a game grid item style set for the hover state.

rpcs3/rpcs3qt/flow_widget_item.cpp

@@ -4,6 +4,15 @@
 #include <QStyleOption>
 #include <QPainter>
 
+flow_widget_item::flow_widget_item(QWidget* parent) : QWidget(parent)
+{
+	setAttribute(Qt::WA_Hover); // We need to enable the hover attribute to ensure that hover events are handled.
+}
+
+flow_widget_item::~flow_widget_item()
+{
+}
+
 void flow_widget_item::polish_style()
 {
 	style()->unpolish(this);

rpcs3/rpcs3qt/flow_widget_item.h

@@ -25,7 +25,8 @@ class flow_widget_item : public QWidget
 	Q_PROPERTY(bool selected MEMBER selected) // Stylesheet workaround for descendants with parent pseudo state
 
 public:
-	using QWidget::QWidget;
+	flow_widget_item(QWidget* parent);
+	virtual ~flow_widget_item();
 
 	virtual void polish_style();
 

rpcs3/rpcs3qt/game_list_grid_item.cpp

@@ -7,6 +7,7 @@ game_list_grid_item::game_list_grid_item(QWidget* parent, game_info game, const
 	: flow_widget_item(parent), movie_item_base(), m_game(std::move(game))
 {
 	setObjectName("game_list_grid_item");
+	setAttribute(Qt::WA_Hover); // We need to enable the hover attribute to ensure that hover events are handled.
 
 	cb_on_first_visibility = [this]()
 	{