### Godot version

4.0 Beta10

### System information

Windows 10, Vulkan, GTX1060

### Issue description

`PropertyTweener`'s methods' return value are not discarded and effect the unary operator at next line.

In Editor:
![in_editor](https://user-images.githubusercontent.com/61624558/210715100-04bdf283-7954-4be3-94ca-338987b24c5b.png)


In cpp:
![in_cpp](https://user-images.githubusercontent.com/61624558/210715127-519f6d54-fc15-468f-9aca-ba7d387a5a7b.png)


### Steps to reproduce

Just run the Minimal reproduction project.

### Minimal reproduction project

[Bug Report.zip](https://github.com/godotengine/godot/files/10349829/Bug.Report.zip)

reduce_expression(p_unary_op->operand);
	GDScriptParser::DataType result;
	if (p_unary_op->operand == nullptr) {
		result.kind = GDScriptParser::DataType::VARIANT;
		p_unary_op->set_datatype(result);
		return;
	}
	GDScriptParser::DataType operand_type = p_unary_op->operand->get_datatype();
	if (p_unary_op->operand->is_constant) {
		p_unary_op->is_constant = true;
		p_unary_op->reduced_value = Variant::evaluate(p_unary_op->variant_op, p_unary_op->operand->reduced_value, Variant());
		result = type_from_variant(p_unary_op->reduced_value, p_unary_op);
	}
	if (operand_type.is_variant()) {
		result.kind = GDScriptParser::DataType::VARIANT;
		mark_node_unsafe(p_unary_op);
	} else {
		bool valid = false;
		result = get_operation_type(p_unary_op->variant_op, operand_type, valid, p_unary_op);
		if (!valid) {
			push_error(vformat(R"(Invalid operand of type "%s" for unary operator "%s".)", operand_type.to_string(), Variant::get_operator_name(p_unary_op->variant_op)), p_unary_op);
		}
	}
	p_unary_op->set_datatype(result);
}
void GDScriptAnalyzer::const_fold_array(GDScriptParser::ArrayNode *p_array) {