### 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?)
}
				}
				int existing_idx = -1;
				if (dst_track == -1) {
					
					dst_track = reset_tracks;
					reset_tracks++;
					undo_redo->add_do_method(reset.ptr(), "add_track", animation->track_get_type(sk.track));
					undo_redo->add_do_method(reset.ptr(), "track_set_path", dst_track, path);
					undo_redo->add_undo_method(reset.ptr(), "remove_track", dst_track);
				} else {
					existing_idx = reset->track_find_key(dst_track, 0, Animation::FIND_MODE_APPROX);
				}
				undo_redo->add_do_method(reset.ptr(), "track_insert_key", dst_track, 0, animation->track_get_key_value(sk.track, sk.key), animation->track_get_key_transition(sk.track, sk.key));
				undo_redo->add_undo_method(reset.ptr(), "track_remove_key_at_time", dst_track, 0);
				if (existing_idx != -1) {
					undo_redo->add_undo_method(reset.ptr(), "track_insert_key", dst_track, 0, reset->track_get_key_value(dst_track, existing_idx), reset->track_get_key_transition(dst_track, existing_idx));
				}
			}
			undo_redo->add_do_method(this, "_clear_selection_for_anim", animation);
			undo_redo->add_undo_method(this, "_clear_selection_for_anim", animation);
			undo_redo->add_do_method(this, "_redraw_tracks");
			undo_redo->add_undo_method(this, "_redraw_tracks");
			undo_redo->commit_action();
		} break;
		case EDIT_DELETE_SELECTION: {
			if (bezier_edit->is_visible()) {
				bezier_edit->delete_selection();
				break;
			}