### 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 < args.size(); i++) {
						if (i > 0) {
							text += ", ";
						}
						text += args[i].get_construct_string();
					}
					text += ")\n";
				} break;
				case Animation::TYPE_BEZIER: {
					float h = animation->bezier_track_get_key_value(track, key_idx);
					text += TTR("Value:") + " " + rtos(h) + "\n";
					Vector2 ih = animation->bezier_track_get_key_in_handle(track, key_idx);
					text += TTR("In-Handle:") + " " + ih + "\n";
					Vector2 oh = animation->bezier_track_get_key_out_handle(track, key_idx);
					text += TTR("Out-Handle:") + " " + oh + "\n";
					int hm = animation->bezier_track_get_key_handle_mode(track, key_idx);
					switch (hm) {
						case Animation::HANDLE_MODE_FREE: {
							text += TTR("Handle mode: Free\n");
						} break;
						case Animation::HANDLE_MODE_LINEAR: {
							text += TTR("Handle mode: Linear\n");
						} break;
						case Animation::HANDLE_MODE_BALANCED: {
							text += TTR("Handle mode: Balanced\n");
						} break;
						case Animation::HANDLE_MODE_MIRRORED: {
							text += TTR("Handle mode: Mirrored\n");
						} break;
					}