### 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 (updating_tree) {
		return;
	}
	TreeItem *edited_item = import_items_tree->get_edited();
	if (!edited_item) {
		return;
	}
	updating_tree = true;
	int edited_column = import_items_tree->get_edited_column();
	bool is_checked = edited_item->is_checked(edited_column);
	if (is_checked) {
		if (edited_column == IMPORT_ITEM_DATA) {
			edited_item->set_checked(IMPORT_ITEM, true);
			edited_item->propagate_check(IMPORT_ITEM);
		}
	} else {
		if (edited_column == IMPORT_ITEM) {
			edited_item->set_checked(IMPORT_ITEM_DATA, false);
			edited_item->propagate_check(IMPORT_ITEM_DATA);
		}
	}
	edited_item->propagate_check(edited_column);
	updating_tree = false;
}
void ThemeItemImportTree::_check_propagated_to_tree_item(Object *p_obj, int p_column) {