### Godot version

4.2 dev3

### System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

### Issue description

If you have a Method Track with multiple calls to the same method, they are joined together and makes things unreadable:
![image](https://github.com/godotengine/godot/assets/2223172/a2ab8446-28a1-440b-b0d5-5049f5d705b4)
The horizontal line shouldn't be used here. I think it might be a regression.

### Steps to reproduce

1. Add AnimationPlayer
2. Add a Method Track (with Add Track button)
3. Add some key to the track
4. Add another key with the same method

### Minimal reproduction project

N/A
Vector2 popup_pos = get_screen_position() + update_mode_rect.position + Vector2(0, update_mode_rect.size.height);
				menu->set_position(popup_pos);
				menu->popup();
				accept_event();
			}
			if (interp_mode_rect.has_point(pos)) {
				if (!menu) {
					menu = memnew(PopupMenu);
					add_child(menu);
					menu->connect("id_pressed", callable_mp(this, &AnimationTrackEdit::_menu_selected));
				}
				menu->clear();
				menu->add_icon_item(get_editor_theme_icon(SNAME("InterpRaw")), TTR("Nearest"), MENU_INTERPOLATION_NEAREST);
				menu->add_icon_item(get_editor_theme_icon(SNAME("InterpLinear")), TTR("Linear"), MENU_INTERPOLATION_LINEAR);
				menu->add_icon_item(get_editor_theme_icon(SNAME("InterpCubic")), TTR("Cubic"), MENU_INTERPOLATION_CUBIC);
				
				AnimationPlayerEditor *ape = AnimationPlayerEditor::get_singleton();
				if (ape) {
					AnimationPlayer *ap = ape->get_player();
					if (ap) {
						NodePath npath = animation->track_get_path(track);
						Node *nd = ap->get_node(ap->get_root())->get_node(NodePath(npath.get_concatenated_names()));
						StringName prop = npath.get_concatenated_subnames();
						PropertyInfo prop_info;
						ClassDB::get_property_info(nd->get_class(), prop, &prop_info);
						bool is_angle = prop_info.type == Variant::FLOAT && prop_info.hint_string.find("radians") != -1;
						if (is_angle) {
							menu->add_icon_item(get_editor_theme_icon(SNAME("InterpLinearAngle")), TTR("Linear Angle"), MENU_INTERPOLATION_LINEAR_ANGLE);
							menu->add_icon_item(get_editor_theme_icon(SNAME("InterpCubicAngle")), TTR("Cubic Angle"), MENU_INTERPOLATION_CUBIC_ANGLE);
						}