### 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
for (int i = 0; i < Variant::VARIANT_MAX; i++) {
				if (i > 0) {
					vtypes += ",";
				}
				vtypes += Variant::get_type_name(Variant::Type(i));
			}
			for (int i = 0; i < args.size(); i++) {
				p_list->push_back(PropertyInfo(Variant::INT, vformat("%s/%d/%s", PNAME("args"), i, PNAME("type")), PROPERTY_HINT_ENUM, vtypes));
				if (args[i].get_type() != Variant::NIL) {
					p_list->push_back(PropertyInfo(args[i].get_type(), vformat("%s/%d/%s", PNAME("args"), i, PNAME("value"))));
				}
			}
		} break;
		case Animation::TYPE_BEZIER: {
			Animation::HandleMode hm = animation->bezier_track_get_key_handle_mode(track, key);
			p_list->push_back(PropertyInfo(Variant::FLOAT, PNAME("value")));
			if (hm == Animation::HANDLE_MODE_LINEAR) {
				p_list->push_back(PropertyInfo(Variant::VECTOR2, PNAME("in_handle"), PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_READ_ONLY));
				p_list->push_back(PropertyInfo(Variant::VECTOR2, PNAME("out_handle"), PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_READ_ONLY));
			} else {
				p_list->push_back(PropertyInfo(Variant::VECTOR2, PNAME("in_handle")));
				p_list->push_back(PropertyInfo(Variant::VECTOR2, PNAME("out_handle")));
			}
			p_list->push_back(PropertyInfo(Variant::INT, PNAME("handle_mode"), PROPERTY_HINT_ENUM, "Free,Linear,Balanced,Mirrored"));
		} break;
		case Animation::TYPE_AUDIO: {
			p_list->push_back(PropertyInfo(Variant::OBJECT, PNAME("stream"), PROPERTY_HINT_RESOURCE_TYPE, "AudioStream"));
			p_list->push_back(PropertyInfo(Variant::FLOAT, PNAME("start_offset"), PROPERTY_HINT_RANGE, "0,3600,0.0001,or_greater"));
			p_list->push_back(PropertyInfo(Variant::FLOAT, PNAME("end_offset"), PROPERTY_HINT_RANGE, "0,3600,0.0001,or_greater"));
		} break;