### 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 float distance = ABS(offset - pos.x);
							if (key_idx == -1 || distance < key_distance) {
								key_idx = i;
								key_distance = distance;
								hovering_key_idx = i;
							}
						} else {
							
							hovering_key_idx = i;
							break;
						}
					}
				}
				if (hovering_key_idx != previous_hovering_key_idx) {
					
					queue_redraw();
				}
			}
		}
	}
	if (mm.is_valid() && mm->get_button_mask().has_flag(MouseButtonMask::LEFT) && moving_selection_attempt) {
		if (!moving_selection) {
			moving_selection = true;
			emit_signal(SNAME("move_selection_begin"));
		}
		float new_ofs = (mm->get_position().x - timeline->get_name_limit()) / timeline->get_zoom_scale();
		emit_signal(SNAME("move_selection"), new_ofs - moving_selection_from_ofs);
	}
}
Variant AnimationTrackEdit::get_drag_data(const Point2 &p_point) {