### 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)

style_panel_invisible_top->set_expand_margin(SIDE_TOP, -stylebox_offset);
	style_panel_invisible_top->set_content_margin(SIDE_TOP, 0);
	theme->set_stylebox("BottomPanelDebuggerOverride", "EditorStyles", style_panel_invisible_top);
	
	Ref<StyleBoxFlat> style_line_edit = style_widget->duplicate();
	
	
	style_line_edit->set_content_margin(SIDE_TOP, style_line_edit->get_content_margin(SIDE_TOP) - 1 * EDSCALE);
	
	style_line_edit->set_corner_radius(CORNER_BOTTOM_LEFT, 0);
	style_line_edit->set_corner_radius(CORNER_BOTTOM_RIGHT, 0);
	if (draw_extra_borders) {
		style_line_edit->set_border_width_all(Math::round(EDSCALE));
		style_line_edit->set_border_color(extra_border_color_1);
	} else {
		
		
		style_line_edit->set_border_width(SIDE_BOTTOM, Math::round(2 * EDSCALE));
		style_line_edit->set_border_color(dark_color_2);
	}
	Ref<StyleBoxFlat> style_line_edit_disabled = style_line_edit->duplicate();
	style_line_edit_disabled->set_border_color(disabled_color);
	style_line_edit_disabled->set_bg_color(disabled_bg_color);
	theme->set_stylebox("normal", "LineEdit", style_line_edit);
	theme->set_stylebox("focus", "LineEdit", style_widget_focus);
	theme->set_stylebox("read_only", "LineEdit", style_line_edit_disabled);
	theme->set_icon("clear", "LineEdit", theme->get_icon(SNAME("GuiClose"), SNAME("EditorIcons")));
	theme->set_color("font_color", "LineEdit", font_color);
	theme->set_color("font_selected_color", "LineEdit", mono_color);
	theme->set_color("font_uneditable_color", "LineEdit", font_readonly_color);