### Godot version

4.0.dev (c309de53997feff3286295fb2d71657f112a15db)

### System information

Linux, Nvidia, Vulkan

### Issue description

Editor segfaults when certain conditions are met when using the AnimationPlayer editor.

### Steps to reproduce

1. Create multiple animations, saved into a animation collection
2. Open an existing animation, then make a new empty animation
3. Change from seconds to fps, or add a new property to animate ()
4. Editor crashes

NOTE: It is slightly random and I have not found a perfect repro

### Minimal reproduction project

N/A (TBD?)
case Animation::TYPE_ROTATION_3D:
		case Animation::TYPE_SCALE_3D:
		case Animation::TYPE_BLEND_SHAPE:
		case Animation::TYPE_VALUE: {
			value = p_id.value;
		} break;
		case Animation::TYPE_BEZIER: {
			Array array;
			array.resize(5);
			array[0] = p_id.value;
			array[1] = -0.25;
			array[2] = 0;
			array[3] = 0.25;
			array[4] = 0;
			value = array;
			bezier_edit_icon->set_disabled(false);
		} break;
		case Animation::TYPE_ANIMATION: {
			value = p_id.value;
		} break;
		default: {
		}
	}
	undo_redo->add_do_method(animation.ptr(), "track_insert_key", p_id.track_idx, time, value);
	if (created) {
		
		undo_redo->add_undo_method(this, "_clear_selection", false);
		undo_redo->add_undo_method(animation.ptr(), "remove_track", animation->get_track_count());
		p_next_tracks.normal++;
	} else {