### 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)

theme->set_stylebox("child_bg", "EditorProperty", style_property_child_bg);
	theme->set_constant("v_separation", "EditorProperty", (extra_spacing + default_margin_size) * EDSCALE);
	theme->set_color("warning_color", "EditorProperty", warning_color);
	theme->set_color("property_color", "EditorProperty", property_color);
	theme->set_color("readonly_color", "EditorProperty", readonly_color);
	theme->set_color("readonly_warning_color", "EditorProperty", readonly_warning_color);
	Ref<StyleBoxFlat> style_property_group_note = style_default->duplicate();
	Color property_group_note_color = accent_color;
	property_group_note_color.a = 0.1;
	style_property_group_note->set_bg_color(property_group_note_color);
	theme->set_stylebox("bg_group_note", "EditorProperty", style_property_group_note);
	
	Color inspector_section_color = font_color.lerp(Color(0.5, 0.5, 0.5), 0.35);
	theme->set_color("font_color", "EditorInspectorSection", inspector_section_color);
	Color inspector_indent_color = accent_color;
	inspector_indent_color.a = 0.2;
	Ref<StyleBoxFlat> inspector_indent_style = make_flat_stylebox(inspector_indent_color, 2.0 * EDSCALE, 0, 2.0 * EDSCALE, 0);
	theme->set_stylebox("indent_box", "EditorInspectorSection", inspector_indent_style);
	theme->set_constant("indent_size", "EditorInspectorSection", 6.0 * EDSCALE);
	theme->set_constant("inspector_margin", "Editor", 12 * EDSCALE);
	
	Ref<StyleBoxFlat> style_tree_bg = style_default->duplicate();
	
	style_tree_bg->set_bg_color(dark_color_1.lerp(dark_color_2, 0.5));
	if (draw_extra_borders) {
		style_tree_bg->set_border_width_all(Math::round(EDSCALE));
		style_tree_bg->set_border_color(extra_border_color_2);
	} else {
		style_tree_bg->set_border_color(dark_color_3);
	}