### 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
push_error(vformat(R"(%s in operator %s.)", p_binary_op->reduced_value, Variant::get_operator_name(p_binary_op->variant_op)), p_binary_op);
				} else {
					push_error(vformat(R"(Invalid operands to operator %s, %s and %s.)",
									   Variant::get_operator_name(p_binary_op->variant_op),
									   Variant::get_type_name(p_binary_op->left_operand->reduced_value.get_type()),
									   Variant::get_type_name(p_binary_op->right_operand->reduced_value.get_type())),
							p_binary_op);
				}
			}
		} else {
			if (p_binary_op->operation == GDScriptParser::BinaryOpNode::OP_TYPE_TEST) {
				GDScriptParser::DataType test_type = right_type;
				test_type.is_meta_type = false;
				if (!is_type_compatible(test_type, left_type, false)) {
					push_error(vformat(R"(Expression is of type "%s" so it can't be of type "%s".)"), p_binary_op->left_operand);
					p_binary_op->reduced_value = false;
				} else {
					p_binary_op->reduced_value = true;
				}
			} else {
				ERR_PRINT("Parser bug: unknown binary operation.");
			}
		}
		p_binary_op->set_datatype(type_from_variant(p_binary_op->reduced_value, p_binary_op));
		return;
	}
	GDScriptParser::DataType result;
	if (left_type.is_variant() || right_type.is_variant()) {
		
		result.kind = GDScriptParser::DataType::VARIANT;