### 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
opcodes.push_back(p_code);
		opcodes.push_back(p_argument_count);
		instr_args_max = MAX(instr_args_max, p_argument_count);
	}
	void append(int p_code) {
		opcodes.push_back(p_code);
	}
	void append(const Address &p_address) {
		opcodes.push_back(address_of(p_address));
	}
	void append(const StringName &p_name) {
		opcodes.push_back(get_name_map_pos(p_name));
	}
	void append(const Variant::ValidatedOperatorEvaluator p_operation) {
		opcodes.push_back(get_operation_pos(p_operation));
	}
	void append(const Variant::ValidatedSetter p_setter) {
		opcodes.push_back(get_setter_pos(p_setter));
	}
	void append(const Variant::ValidatedGetter p_getter) {
		opcodes.push_back(get_getter_pos(p_getter));
	}
	void append(const Variant::ValidatedKeyedSetter p_keyed_setter) {
		opcodes.push_back(get_keyed_setter_pos(p_keyed_setter));
	}
	void append(const Variant::ValidatedKeyedGetter p_keyed_getter) {
		opcodes.push_back(get_keyed_getter_pos(p_keyed_getter));
	}
	void append(const Variant::ValidatedIndexedSetter p_indexed_setter) {