### 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
}
				codegen.generator->write_assign_default_parameter(dst_addr, src_addr);
				if (src_addr.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					codegen.generator->pop_temporary();
				}
			}
			codegen.generator->end_parameters();
		}
		r_error = _parse_block(codegen, p_func->body);
		if (r_error) {
			memdelete(codegen.generator);
			return nullptr;
		}
	}
#ifdef DEBUG_ENABLED
	if (EngineDebugger::is_active()) {
		String signature;
		
		if (!p_script->get_script_path().is_empty()) {
			signature += p_script->get_script_path();
		}
		
		if (p_func) {
			signature += "::" + itos(p_func->body->start_line);
		} else {
			signature += "::0";
		}
		
		if (p_class->identifier) {
			signature += "::" + String(p_class->identifier->name) + "." + String(func_name);