### 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?)
undo_redo->create_action(TTR("Add Track"));
			undo_redo->add_do_method(animation.ptr(), "add_track", adding_track_type);
			undo_redo->add_do_method(animation.ptr(), "track_set_path", animation->get_track_count(), path_to);
			undo_redo->add_undo_method(animation.ptr(), "remove_track", animation->get_track_count());
			undo_redo->commit_action();
		} break;
		case Animation::TYPE_BEZIER: {
			Vector<Variant::Type> filter;
			filter.push_back(Variant::INT);
			filter.push_back(Variant::FLOAT);
			filter.push_back(Variant::VECTOR2);
			filter.push_back(Variant::VECTOR3);
			filter.push_back(Variant::QUATERNION);
			filter.push_back(Variant::PLANE);
			filter.push_back(Variant::COLOR);
			adding_track_path = path_to;
			prop_selector->set_type_filter(filter);
			prop_selector->select_property_from_instance(node);
		} break;
		case Animation::TYPE_AUDIO: {
			if (!node->is_class("AudioStreamPlayer") && !node->is_class("AudioStreamPlayer2D") && !node->is_class("AudioStreamPlayer3D")) {
				EditorNode::get_singleton()->show_warning(TTR("Audio tracks can only point to nodes of type:\n-AudioStreamPlayer\n-AudioStreamPlayer2D\n-AudioStreamPlayer3D"));
				return;
			}
			EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
			undo_redo->create_action(TTR("Add Track"));
			undo_redo->add_do_method(animation.ptr(), "add_track", adding_track_type);
			undo_redo->add_do_method(animation.ptr(), "track_set_path", animation->get_track_count(), path_to);
			undo_redo->add_undo_method(animation.ptr(), "remove_track", animation->get_track_count());
			undo_redo->commit_action();