### Godot version

4.0.dev

### System information

win11，core i7 13700,  GTX4090

### Issue description

Just look at this gif.

![screenshots](https://user-images.githubusercontent.com/1620585/225354749-6ea17059-95b2-45e0-9765-8505e92726eb.gif)

It seems that it was block by Static Type Checking.

![image](https://user-images.githubusercontent.com/1620585/225362874-507ff0ec-c6d8-4a25-9a16-89db1885ad02.png)

If it's right.

Why it doesn't just disable other option except for String and StringName?

### Steps to reproduce

1. first select string type
2. input a text
3. change type
4. change back to string  -- it don't work
5. change to stringname -- it works
6. change back to string -- it works

### Minimal reproduction project

I think it don't need reproduction project.
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) {