### 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?)
last_menu_track_opt = p_option;
	switch (p_option) {
		case EDIT_COPY_TRACKS: {
			track_copy_select->clear();
			TreeItem *troot = track_copy_select->create_item();
			for (int i = 0; i < animation->get_track_count(); i++) {
				NodePath path = animation->track_get_path(i);
				Node *node = nullptr;
				if (root && root->has_node(path)) {
					node = root->get_node(path);
				}
				String text;
				Ref<Texture2D> icon = get_theme_icon(SNAME("Node"), SNAME("EditorIcons"));
				if (node) {
					if (has_theme_icon(node->get_class(), SNAME("EditorIcons"))) {
						icon = get_theme_icon(node->get_class(), SNAME("EditorIcons"));
					}
					text = node->get_name();
					Vector<StringName> sn = path.get_subnames();
					for (int j = 0; j < sn.size(); j++) {
						text += ".";
						text += sn[j];
					}
					path = NodePath(node->get_path().get_names(), path.get_subnames(), true); 
				} else {
					text = path;