Gtk.Scale's highlight can overflow the trough

Steps to reproduce

1. Give trough of any horizontal Gtk.Scale a large height e.g. 20pt (so that the bug can be observed more easily).
2. Make the slider invisible using opacity: 0; CSS property (so that we can see the highlight more clearly).
3. Give both the trough and highlight a large border-radius e.g. 10pt (so that highlight doesn't even have a reason to overflow trough).
4. Set Scale's adjustment's min and max to 0.0 and 1.0 respectively (for simplicity).
5. Change value of Scale's adjustment to a small value e.g. 0.03.

Minimal Example

1. Save the following contents as scale-overfolow-bug.css.

   scale trough {
     min-height: 20pt;
   }
   
   scale trough slider {
     opacity: 0;
   }
   
   scale trough,
   scale trough highlight {
     border-radius: 10pt;
   }

2. Save the following code as scale-overfolow-bug.c.

   #include <gtk/gtk.h>
   
   void on_activate (GtkApplication *app) {
       GtkWindow *win;
       GtkWidget *scale;
       GFile *css_file;
       GdkDisplay *display;
       GtkAdjustment *adj;
       GtkCssProvider *provider;
   
       win = GTK_WINDOW (gtk_application_window_new (app));
       scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, 0, 1, 0.1);
       adj = gtk_range_get_adjustment( GTK_RANGE (scale));
       css_file = g_file_new_for_path ("scale-overflow-bug.css");
       display = gdk_display_get_default ();
       provider = gtk_css_provider_new ();
   
       gtk_css_provider_load_from_file (provider, css_file);
       gtk_style_context_add_provider_for_display(display, GTK_STYLE_PROVIDER (provider),
                                                  GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
   
       gtk_adjustment_set_value (adj, 0.03);
   
       gtk_window_set_child (win, scale);
       gtk_window_present (win);
   }
   
   int main(int argc, char **argv) {
       GtkApplication *app = gtk_application_new (NULL, 0);
       g_signal_connect (app, "activate", G_CALLBACK (on_activate), NULL);
       return g_application_run (G_APPLICATION (app), argc, argv);
   }

3. Compile and run the code with the following command.

   gcc $(pkg-config --libs --cflags gtk4) scale-overflow-bug.c -o scale-overflow-bug && ./scale-overflow-bug

Current behavior

The highlight overflows the trough.

Expected outcome

The highlight should not overflow the trough.

Version information

GTK: 4.10.1 (from Manjaro repos)
Shell: 43.4
Windowing System: Wayland
OS: Manjaro 22.1.0 Talos (2023-04-01)
Graphics: Mesa Intel® HD Graphics 620 (KBL GT2) (as reported by GNOME Settings)
Device: Dell Vostro 14-3468