### 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)

}
#endif
			} break;
			case GDScriptParser::ClassNode::Member::ENUM_VALUE: {
				const GDScriptParser::EnumNode::Value &enum_value = member.enum_value;
				StringName name = enum_value.identifier->name;
				p_script->constants.insert(name, enum_value.value);
#ifdef TOOLS_ENABLED
				p_script->member_lines[name] = enum_value.identifier->start_line;
				if (!p_script->doc_enums.has("@unnamed_enums")) {
					p_script->doc_enums["@unnamed_enums"] = DocData::EnumDoc();
					p_script->doc_enums["@unnamed_enums"].name = "@unnamed_enums";
				}
				DocData::ConstantDoc const_doc;
				const_doc.name = enum_value.identifier->name;
				const_doc.value = Variant(enum_value.value).operator String(); 
				const_doc.description = enum_value.doc_description;
				p_script->doc_enums["@unnamed_enums"].values.push_back(const_doc);
#endif
			} break;
			case GDScriptParser::ClassNode::Member::SIGNAL: {
				const GDScriptParser::SignalNode *signal = member.signal;
				StringName name = signal->identifier->name;
				Vector<StringName> parameters_names;
				parameters_names.resize(signal->parameters.size());
				for (int j = 0; j < signal->parameters.size(); j++) {
					parameters_names.write[j] = signal->parameters[j]->identifier->name;
				}
				p_script->_signals[name] = parameters_names;
#ifdef TOOLS_ENABLED