Fix build with Qt 6.9

The signal parameter is completely unnecessary as the member is read
anyway.

Author: vimpostor

src/Models/path_model.cpp

@@ -67,7 +67,7 @@ void PathModel::refresh_folded_paths() {
 	// only add multiselected items in multiselect mode
 	auto v = paths | std::views::filter([&](const auto &i) { return !multiselected || i.multiselect; });
 	folded_uri_list = std::accumulate(v.cbegin(), v.cend(), QString(), [](QString s, const auto p) { return s.append(QString::fromStdString(p.get_uri()) + "\r\n"); });
-	emit foldedUriListChanged(folded_uri_list);
+	emit foldedUriListChanged();
 }
 
 void PathModel::open(int i) const {

src/Models/path_model.hpp

@@ -28,7 +28,7 @@ class PathModel : public QAbstractListModel {
 	Q_INVOKABLE void finish_init();
 	void add_path(Path p);
 signals:
-	void foldedUriListChanged(QString foldedUriList);
+	void foldedUriListChanged();
 private:
 	enum RoleNames {
 		PathRole = Qt::UserRole,