### 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
String val_hint_string;
						if (v.get_type() == Variant::OBJECT) {
							
							Ref<Resource> res = v;
							if (res.is_valid()) {
								val_hint = PROPERTY_HINT_RESOURCE_TYPE;
								val_hint_string = res->get_class();
							}
						}
						if (v.get_type() != Variant::NIL) {
							p_list->push_back(PropertyInfo(v.get_type(), "value", val_hint, val_hint_string));
						}
					}
				}
				p_list->push_back(PropertyInfo(Variant::FLOAT, "easing", PROPERTY_HINT_EXP_EASING));
			} break;
			case Animation::TYPE_METHOD: {
				p_list->push_back(PropertyInfo(Variant::STRING_NAME, "name"));
				p_list->push_back(PropertyInfo(Variant::INT, "arg_count", PROPERTY_HINT_RANGE, "0,32,1,or_greater"));
				Dictionary d = animation->track_get_key_value(first_track, first_key);
				ERR_FAIL_COND(!d.has("args"));
				Vector<Variant> args = d["args"];
				String vtypes;
				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++) {