### 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)

case Callable::CallError::CALL_ERROR_INVALID_ARGUMENT:
						push_error(vformat(R"(Invalid argument for %s constructor: argument %d should be %s but is %s.)", Variant::get_type_name(builtin_type), err.argument + 1,
										   Variant::get_type_name(Variant::Type(err.expected)), p_call->arguments[err.argument]->get_datatype().to_string()),
								p_call->arguments[err.argument]);
						break;
					case Callable::CallError::CALL_ERROR_INVALID_METHOD: {
						String signature = Variant::get_type_name(builtin_type) + "(";
						for (int i = 0; i < p_call->arguments.size(); i++) {
							if (i > 0) {
								signature += ", ";
							}
							signature += p_call->arguments[i]->get_datatype().to_string();
						}
						signature += ")";
						push_error(vformat(R"(No constructor of "%s" matches the signature "%s".)", Variant::get_type_name(builtin_type), signature), p_call->callee);
					} break;
					case Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS:
						push_error(vformat(R"(Too many arguments for %s constructor. Received %d but expected %d.)", Variant::get_type_name(builtin_type), p_call->arguments.size(), err.expected), p_call);
						break;
					case Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS:
						push_error(vformat(R"(Too few arguments for %s constructor. Received %d but expected %d.)", Variant::get_type_name(builtin_type), p_call->arguments.size(), err.expected), p_call);
						break;
					case Callable::CallError::CALL_ERROR_INSTANCE_IS_NULL:
					case Callable::CallError::CALL_ERROR_METHOD_NOT_CONST:
						break; 
					case Callable::CallError::CALL_OK:
						p_call->is_constant = true;
						p_call->reduced_value = value;
						break;
				}