Cover cases when method type hinting is used together with namespaces or use statements.

This Pull requests fixes errors detected in following code:
```
<?php

namespace Vendor\Package;

use OtherVendor\Package\SomeClass2;

class Foo
{
    /**
     * Some description.
     * @param \Vendor\Package\SomeClass       $someclass  Some class.
     * @param \OtherVendor\Package\SomeClass2 $someclass2 Some class.
     */
    public function setJSModuleLoader(SomeClass $someclass, SomeClass2 $someclass2)
    {
    }
}
```

Code Sniffer output example in such case:
```
Expected type hint "\Vendor\Package\SomeClass";
found "SomeClass" for $someclass
(Squiz.Commenting.FunctionComment.IncorrectTypeHint)
```