### 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
keydata.second = v;
								insert_queue_new.append(keydata);
							}
						} break;
						case Animation::TYPE_VALUE: {
							for (double delta_t = 0.0; delta_t < anim_len; delta_t += dur_step) {
								Pair<real_t, Variant> keydata;
								keydata.first = delta_t;
								keydata.second = animation->value_track_interpolate(i, delta_t);
								insert_queue_new.append(keydata);
							}
						} break;
						default: {
						} break;
					}
					
					int key_len = animation->track_get_key_count(i);
					for (int j = key_len - 1; j >= 0; j--) {
						undo_redo->add_do_method(animation.ptr(), "track_remove_key", i, j);
					}
					
					undo_redo->add_do_method(animation.ptr(), "track_set_interpolation_type", i, is_using_angle ? Animation::INTERPOLATION_LINEAR_ANGLE : Animation::INTERPOLATION_LINEAR);
					for (int j = insert_queue_new.size() - 1; j >= 0; j--) {
						undo_redo->add_do_method(animation.ptr(), "track_insert_key", i, insert_queue_new[j].first, insert_queue_new[j].second);
						undo_redo->add_undo_method(animation.ptr(), "track_remove_key_at_time", i, insert_queue_new[j].first);
					}
					
					undo_redo->add_undo_method(animation.ptr(), "track_set_interpolation_type", i, animation->track_get_interpolation_type(i));
					for (int j = key_len - 1; j >= 0; j--) {
						undo_redo->add_undo_method(animation.ptr(), "track_insert_key", i, animation->track_get_key_time(i, j), animation->track_get_key_value(i, j), animation->track_get_key_transition(i, j));