### Godot version

v4.0.beta.custom_build [1d14c054a]

### System information

Kubuntu 22.10

### Issue description

Regression in master (in beta 10 the following script works correctly).

### Steps to reproduce

```gdscript
@tool
extends EditorScript

func wait(time: float) -> void:
    await get_editor_interface().get_tree().create_timer(time).timeout

func _run() -> void:
    reference()
    # Error: Cannot get return value of call to "wait()" because it returns "void".
    await wait(1.0)
    print("Test")
    unreference()
```

### Minimal reproduction project

N/A
if (p_subscript->base == nullptr) {
		return;
	}
	if (p_subscript->base->type == GDScriptParser::Node::IDENTIFIER) {
		reduce_identifier(static_cast<GDScriptParser::IdentifierNode *>(p_subscript->base), true);
	} else {
		reduce_expression(p_subscript->base);
		if (p_subscript->base->type == GDScriptParser::Node::ARRAY) {
			const_fold_array(static_cast<GDScriptParser::ArrayNode *>(p_subscript->base));
		} else if (p_subscript->base->type == GDScriptParser::Node::DICTIONARY) {
			const_fold_dictionary(static_cast<GDScriptParser::DictionaryNode *>(p_subscript->base));
		}
	}
	GDScriptParser::DataType result_type;
	if (p_subscript->is_attribute) {
		if (p_subscript->attribute == nullptr) {