### 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)

element = _parse_expression(codegen, r_error, dn->elements[i].key);
						if (r_error) {
							return GDScriptCodeGenerator::Address();
						}
						break;
					case GDScriptParser::DictionaryNode::LUA_TABLE:
						
						StringName key = dn->elements[i].key->reduced_value.operator StringName();
						element = codegen.add_constant(key);
						break;
				}
				elements.push_back(element);
				element = _parse_expression(codegen, r_error, dn->elements[i].value);
				if (r_error) {
					return GDScriptCodeGenerator::Address();
				}
				elements.push_back(element);
			}
			gen->write_construct_dictionary(result, elements);
			for (int i = 0; i < elements.size(); i++) {
				if (elements[i].mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					gen->pop_temporary();
				}
			}
			return result;
		} break;
		case GDScriptParser::Node::CAST: {
			const GDScriptParser::CastNode *cn = static_cast<const GDScriptParser::CastNode *>(p_expression);
			GDScriptParser::DataType og_cast_type = cn->get_datatype();