### 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?)
const Ref<Texture2D> type_icons[9] = {
		get_theme_icon(SNAME("KeyValue"), SNAME("EditorIcons")),
		get_theme_icon(SNAME("KeyTrackPosition"), SNAME("EditorIcons")),
		get_theme_icon(SNAME("KeyTrackRotation"), SNAME("EditorIcons")),
		get_theme_icon(SNAME("KeyTrackScale"), SNAME("EditorIcons")),
		get_theme_icon(SNAME("KeyTrackBlendShape"), SNAME("EditorIcons")),
		get_theme_icon(SNAME("KeyCall"), SNAME("EditorIcons")),
		get_theme_icon(SNAME("KeyBezier"), SNAME("EditorIcons")),
		get_theme_icon(SNAME("KeyAudio"), SNAME("EditorIcons")),
		get_theme_icon(SNAME("KeyAnimation"), SNAME("EditorIcons"))
	};
	return type_icons[animation->track_get_type(track)];
}
String AnimationTrackEdit::get_tooltip(const Point2 &p_pos) const {