### 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)

edit_draw->add_child(zoom_hb);
	zoom_hb->set_begin(Point2(5, 5));
	zoom_out = memnew(Button);
	zoom_out->set_flat(true);
	zoom_out->set_tooltip_text(TTR("Zoom Out"));
	zoom_out->connect("pressed", callable_mp(this, &TextureRegionEditor::_zoom_out));
	zoom_hb->add_child(zoom_out);
	zoom_reset = memnew(Button);
	zoom_reset->set_flat(true);
	zoom_reset->set_tooltip_text(TTR("Zoom Reset"));
	zoom_reset->connect("pressed", callable_mp(this, &TextureRegionEditor::_zoom_reset));
	zoom_hb->add_child(zoom_reset);
	zoom_in = memnew(Button);
	zoom_in->set_flat(true);
	zoom_in->set_tooltip_text(TTR("Zoom In"));
	zoom_in->connect("pressed", callable_mp(this, &TextureRegionEditor::_zoom_in));
	zoom_hb->add_child(zoom_in);
	vscroll = memnew(VScrollBar);
	vscroll->set_step(0.001);
	edit_draw->add_child(vscroll);
	vscroll->connect("value_changed", callable_mp(this, &TextureRegionEditor::_scroll_changed));
	hscroll = memnew(HScrollBar);
	hscroll->set_step(0.001);
	edit_draw->add_child(hscroll);
	hscroll->connect("value_changed", callable_mp(this, &TextureRegionEditor::_scroll_changed));
	updating_scroll = false;
	autoslice_is_dirty = true;
	set_title(TTR("Region Editor"));
}
bool EditorInspectorPluginTextureRegion::can_handle(Object *p_object) {