visibility_required doesn't work with PHP 8 union types

[stancl]

Bug report

This fixer seems to add visibility for each listed type. The code below becomes protected array|public Closure $abc = [];

Config:

'visibility_required' => [
    'elements' => ['method', 'property']
],

Code snippet that reproduces the problem

class Foo
{
    protected array|Closure $abc = [];
}

[kubawerlos]

I was fixed in #5660.