### 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
text += TTR("Rotation:") + " " + String(t) + "\n";
				} break;
				case Animation::TYPE_SCALE_3D: {
					Vector3 t = animation->track_get_key_value(track, key_idx);
					text += TTR("Scale:") + " " + String(t) + "\n";
				} break;
				case Animation::TYPE_BLEND_SHAPE: {
					float t = animation->track_get_key_value(track, key_idx);
					text += TTR("Blend Shape:") + " " + itos(t) + "\n";
				} break;
				case Animation::TYPE_VALUE: {
					const Variant &v = animation->track_get_key_value(track, key_idx);
					text += TTR("Type:") + " " + Variant::get_type_name(v.get_type()) + "\n";
					Variant::Type valid_type = Variant::NIL;
					text += TTR("Value:") + " " + String(v);
					if (!_is_value_key_valid(v, valid_type)) {
						text += " " + vformat(TTR("(Invalid, expected type: %s)"), Variant::get_type_name(valid_type));
					}
					text += "\n" + TTR("Easing:") + " " + rtos(animation->track_get_key_transition(track, key_idx));
				} break;
				case Animation::TYPE_METHOD: {
					Dictionary d = animation->track_get_key_value(track, key_idx);
					if (d.has("method")) {
						text += String(d["method"]);
					}
					text += "(";
					Vector<Variant> args;
					if (d.has("args")) {
						args = d["args"];
					}