### 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)

const Color member_variable_color = dark_theme ? Color(0.34, 0.7, 1.0).lerp(mono_color, 0.6) : Color(0, 0.4, 0.68, 1);
	const Color mark_color = Color(error_color.r, error_color.g, error_color.b, 0.3);
	const Color bookmark_color = Color(0.08, 0.49, 0.98);
	const Color breakpoint_color = dark_theme ? error_color : Color(1, 0.27, 0.2, 1);
	const Color executing_line_color = Color(0.98, 0.89, 0.27);
	const Color code_folding_color = alpha3;
	const Color search_result_color = alpha1;
	const Color search_result_border_color = dark_theme ? Color(0.41, 0.61, 0.91, 0.38) : Color(0, 0.4, 1, 0.38);
	EditorSettings *setting = EditorSettings::get_singleton();
	String text_editor_color_theme = setting->get("text_editor/theme/color_theme");
	if (text_editor_color_theme == "Default") {
		setting->set_initial_value("text_editor/theme/highlighting/symbol_color", symbol_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/keyword_color", keyword_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/control_flow_keyword_color", control_flow_keyword_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/base_type_color", base_type_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/engine_type_color", engine_type_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/user_type_color", user_type_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/comment_color", comment_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/string_color", string_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/background_color", te_background_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/completion_background_color", completion_background_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/completion_selected_color", completion_selected_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/completion_existing_color", completion_existing_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/completion_scroll_color", completion_scroll_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/completion_scroll_hovered_color", completion_scroll_hovered_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/completion_font_color", completion_font_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/text_color", text_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/line_number_color", line_number_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/safe_line_number_color", safe_line_number_color, true);
		setting->set_initial_value("text_editor/theme/highlighting/caret_color", caret_color, true);