Use proxy style to force ActivateItemOnSingleClick off

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>

launcher/ui/themes/HintOverrideProxyStyle.cpp

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "HintOverrideProxyStyle.h"
+
+int HintOverrideProxyStyle::styleHint(QStyle::StyleHint hint,
+                                      const QStyleOption* option,
+                                      const QWidget* widget,
+                                      QStyleHintReturn* returnData) const
+{
+    if (hint == QStyle::SH_ItemView_ActivateItemOnSingleClick)
+        return 0;
+
+    return QProxyStyle::styleHint(hint, option, widget, returnData);
+}