revert the scroll inversion on macos

Author: altalk23

src/backend.cpp

@@ -142,7 +142,7 @@ static float SCROLL_SENSITIVITY = 10;
 class $modify(CCMouseDispatcher) {
     bool dispatchScrollMSG(float y, float x) {
         auto& io = ImGui::GetIO();
-        io.AddMouseWheelEvent(x / SCROLL_SENSITIVITY, y / SCROLL_SENSITIVITY GEODE_WINDOWS(* -1.f));
+        io.AddMouseWheelEvent(x / SCROLL_SENSITIVITY, -y / SCROLL_SENSITIVITY);
 
         if (!io.WantCaptureMouse || shouldPassEventsToGDButTransformed()) {
             return CCMouseDispatcher::dispatchScrollMSG(y, x);