### 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
dragging_hsize = false;
	}
	if (mb.is_valid() && mb->get_position().x > get_name_limit() && mb->get_position().x < (get_size().width - get_buttons_width())) {
		if (!panner->is_panning() && mb->get_button_index() == MouseButton::LEFT) {
			int x = mb->get_position().x - get_name_limit();
			float ofs = x / get_zoom_scale() + get_value();
			emit_signal(SNAME("timeline_changed"), ofs, false, mb->is_alt_pressed());
			dragging_timeline = true;
		}
	}
	if (dragging_timeline && mb.is_valid() && mb->get_button_index() == MouseButton::LEFT && !mb->is_pressed()) {
		dragging_timeline = false;
	}
	Ref<InputEventMouseMotion> mm = p_event;
	if (mm.is_valid()) {
		if (dragging_hsize) {
			int ofs = mm->get_position().x - dragging_hsize_from;
			name_limit = dragging_hsize_at + ofs;
			queue_redraw();
			emit_signal(SNAME("name_limit_changed"));
			play_position->queue_redraw();
		}
		if (dragging_timeline) {
			int x = mm->get_position().x - get_name_limit();
			float ofs = x / get_zoom_scale() + get_value();
			emit_signal(SNAME("timeline_changed"), ofs, false, mm->is_alt_pressed());
		}
	}
}
Control::CursorShape AnimationTimelineEdit::get_cursor_shape(const Point2 &p_pos) const {