New PHP 8.4 Syntax: new MyClass()->method() without parentheses

[KorvinSzanto]

new Foo()->baz() will be allowed in PHP 8.4, we should cover it in the next version of PER-CS.

To me this is similar to the question of new Foo vs new Foo() where we decided the latter was better for readability: https://github.com/php-fig/per-coding-style/blob/master/spec.md#4-classes-properties-and-methods