### 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::LOOP_LINEAR: {
			loop->set_icon(get_theme_icon(SNAME("Loop"), SNAME("EditorIcons")));
			loop->set_pressed(true);
		} break;
		case Animation::LOOP_PINGPONG: {
			loop->set_icon(get_theme_icon(SNAME("PingPongLoop"), SNAME("EditorIcons")));
			loop->set_pressed(true);
		} break;
		default:
			break;
	}
	editing = false;
}
void AnimationTimelineEdit::_play_position_draw() {
	if (!animation.is_valid() || play_position_pos < 0) {
		return;
	}
	float scale = get_zoom_scale();
	int h = play_position->get_size().height;
	int px = (-get_value() + play_position_pos) * scale + get_name_limit();
	if (px >= get_name_limit() && px < (play_position->get_size().width - get_buttons_width())) {
		Color color = get_theme_color(SNAME("accent_color"), SNAME("Editor"));
		play_position->draw_line(Point2(px, 0), Point2(px, h), color, Math::round(2 * EDSCALE));
		play_position->draw_texture(
				get_theme_icon(SNAME("TimelineIndicator"), SNAME("EditorIcons")),
				Point2(px - get_theme_icon(SNAME("TimelineIndicator"), SNAME("EditorIcons"))->get_width() * 0.5, 0),
				color);
	}
}
void AnimationTimelineEdit::gui_input(const Ref<InputEvent> &p_event) {