### 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.
return true;
}
void AnimationTrackEdit::draw_key_link(int p_index, float p_pixels_sec, int p_x, int p_next_x, int p_clip_left, int p_clip_right) {
	if (p_next_x < p_clip_left) {
		return;
	}
	if (p_x > p_clip_right) {
		return;
	}
	Variant current = animation->track_get_key_value(get_track(), p_index);
	Variant next = animation->track_get_key_value(get_track(), p_index + 1);
	if (current != next) {
		return;
	}
	Color color = get_theme_color(SNAME("font_color"), SNAME("Label"));
	color.a = 0.5;
	int from_x = MAX(p_x, p_clip_left);
	int to_x = MIN(p_next_x, p_clip_right);
	draw_line(Point2(from_x + 1, get_size().height / 2), Point2(to_x, get_size().height / 2), color, Math::round(2 * EDSCALE));
}
void AnimationTrackEdit::draw_key(int p_index, float p_pixels_sec, int p_x, bool p_selected, int p_clip_left, int p_clip_right) {