Qt: Use path as tie breaker when sort titles equal

src/core/fullscreen_ui.cpp

@@ -7878,7 +7878,11 @@ void FullscreenUI::PopulateGameListEntryList()
 
               // fallback to title when all else is equal
               const int res = StringUtil::CompareNoCase(lhs->GetSortTitle(), rhs->GetSortTitle());
+              if (res != 0)
                 return reverse ? (res > 0) : (res < 0);
+
+              // fallback to path when all else is equal
+              return reverse ? (lhs->path > rhs->path) : (lhs->path < rhs->path);
             });
 }
 

src/duckstation-qt/gamelistwidget.cpp

@@ -814,7 +814,12 @@ void GameListModel::refresh()
 
 bool GameListModel::titlesLessThan(const GameList::Entry* left, const GameList::Entry* right) const
 {
-  return (StringUtil::CompareNoCase(left->GetSortTitle(), right->GetSortTitle()) < 0);
+  const s32 res = StringUtil::CompareNoCase(left->GetSortTitle(), right->GetSortTitle());
+  if (res != 0)
+    return (res < 0);
+
+  // Fallback to path compare if titles are the same.
+  return (left->path < right->path);
 }
 
 bool GameListModel::lessThan(const QModelIndex& left_index, const QModelIndex& right_index, int column) const