### Godot version

4.0-rc6

### System information

Fedora 37, Mesa Intel ADL GT2

### Issue description

Code that works as expected at runtime fails with Nil references to (assigned) exported vars in the editor:

![tool_global_position_error](https://user-images.githubusercontent.com/364501/222031460-ffb1ecbd-5175-4a42-8470-25285ba5f821.png)


### Steps to reproduce

Try to access the `global_position` of a `Node3D` that's assigned to an exported var.

See that it works at runtime.

See that it errors in the editor with:

> Invalid get index 'global_position' (on base: 'Nil').

### Minimal reproduction project

[tool_test.zip](https://github.com/godotengine/godot/files/10856640/tool_test.zip)

use_sub_inspector = bool(EDITOR_GET("interface/inspector/open_resources_in_current_inspector"));
}
bool EditorInspectorDefaultPlugin::can_handle(Object *p_object) {
	return true; 
}
bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, const Variant::Type p_type, const String &p_path, const PropertyHint p_hint, const String &p_hint_text, const BitField<PropertyUsageFlags> p_usage, const bool p_wide) {
	Control *editor = EditorInspectorDefaultPlugin::get_editor_for_property(p_object, p_type, p_path, p_hint, p_hint_text, p_usage, p_wide);
	if (editor) {
		add_property_editor(p_path, editor);
	}
	return false;
}
struct EditorPropertyRangeHint {
	bool or_greater = true;
	bool or_less = true;
	double min = -99999.0;
	double max = 99999.0;
	double step = 1.0;
	String suffix;
	bool exp_range = false;
	bool hide_slider = true;
	bool radians = false;
};
static EditorPropertyRangeHint _parse_range_hint(PropertyHint p_hint, const String &p_hint_text, double p_default_step, bool is_int = false) {