### Godot version

v4.0.beta.custom_build [eaf306e0b]

### System information

Windows 10

### Issue description

Selecting a `Window` node in the Editor's SceneTree results in the message
```
editor/editor_data.cpp:1058 - Parameter "p_node" is null.
```
and the Inspector shows empty content instead of the Window's properties.

I would expect, that clicking on a node in the SceneTree lets me edit the properties of the node.

Bisecting shows that this behavior got introduced in #71770

### Steps to reproduce

1. Create a Window node
2. Click on the Window node in the Editor's SceneTree

### Minimal reproduction project

N/A
if (is_alt && !_only_packed_scenes_selected()) {
		_show_resource_type_selector();
	} else {
		_perform_drop_data();
	}
}
Node *CanvasItemEditorViewport::_make_texture_node_type(String texture_node_type) {
	Node *node = nullptr;
	if (texture_node_type == "Sprite2D") {
		node = memnew(Sprite2D);
	} else if (texture_node_type == "PointLight2D") {
		node = memnew(PointLight2D);
	} else if (texture_node_type == "CPUParticles2D") {
		node = memnew(CPUParticles2D);
	} else if (texture_node_type == "GPUParticles2D") {
		node = memnew(GPUParticles2D);
	} else if (texture_node_type == "Polygon2D") {
		node = memnew(Polygon2D);
	} else if (texture_node_type == "TouchScreenButton") {
		node = memnew(TouchScreenButton);
	} else if (texture_node_type == "TextureRect") {
		node = memnew(TextureRect);
	} else if (texture_node_type == "TextureButton") {
		node = memnew(TextureButton);
	} else if (texture_node_type == "NinePatchRect") {
		node = memnew(NinePatchRect);
	}
	return node;
}
void CanvasItemEditorViewport::_update_theme() {