### Godot version

v4.0.1.stable.official [cacf49999]

### System information

Windows 10

### Issue description

If you use Sprite2D with a regular CompressedTexture and set a Region on it, then use a Sprite2D with a CanvasTexture and a different texture in the diffuse, and try to set a Region, the Region Editor display will show the texture from the first sprite2D node. I would expect it to show the diffuse texture from the current Sprite2D.
![image](https://user-images.githubusercontent.com/7292421/231493673-4eb152e0-81ed-4248-8465-71242c291cd2.png)
![image](https://user-images.githubusercontent.com/7292421/231493749-6173993b-e77c-4899-961e-9a055c07e351.png)




### Steps to reproduce

Make a sprite2D node
add a texture to it 
set Region to Enabled
click Edit Region under 'Region'
set any region

Make another sprite2D node
add a CanvasTexture to it
add a different texture to the Diffuse part
set Region to Enabled
click Edit Region under 'Region'
see wrong texture

### Minimal reproduction project

[RegionEditorBug.zip](https://github.com/godotengine/godot/files/11212626/RegionEditorBug.zip)

_zoom_on_position(draw_zoom * 1.5, edit_draw->get_size() / 2.0);
}
void TextureRegionEditor::_zoom_reset() {
	_zoom_on_position(1.0, edit_draw->get_size() / 2.0);
}
void TextureRegionEditor::_zoom_out() {
	_zoom_on_position(draw_zoom / 1.5, edit_draw->get_size() / 2.0);
}
void TextureRegionEditor::apply_rect(const Rect2 &p_rect) {
	if (atlas_tex.is_valid()) {
		atlas_tex->set_region(p_rect);
	} else if (node_sprite_2d) {
		node_sprite_2d->set_region_rect(p_rect);
	} else if (node_sprite_3d) {
		node_sprite_3d->set_region_rect(p_rect);
	} else if (node_ninepatch) {
		node_ninepatch->set_region_rect(p_rect);
	} else if (obj_styleBox.is_valid()) {
		obj_styleBox->set_region_rect(p_rect);
	}
}
void TextureRegionEditor::_update_rect() {