style: enable get_class_to_class_keyword fixer

[paulbalandan]

Description

❯ utils/vendor/bin/php-cs-fixer describe get_class_to_class_keyword
PHP CS Fixer 3.67.0 Persian Successor by Fabien Potencier, Dariusz Ruminski and contributors.
PHP runtime: 8.3.15
Description of the `get_class_to_class_keyword` rule.

Replace `get_class` calls on object variables with class keyword syntax.

Fixer applying this rule is RISKY.
Risky if the `get_class` function is overridden.

Fixing examples:
 * Example #1.
   ---------- begin diff ----------
   --- Original
   +++ New
   @@ -1,2 +1,2 @@
    <?php
   -get_class($a);
   +$a::class;
   
   ----------- end diff -----------

 * Example #2.
   ---------- begin diff ----------
   --- Original
   +++ New
   @@ -1,4 +1,4 @@
    <?php
    
    $date = new \DateTimeImmutable();
   -$class = get_class($date);
   +$class = $date::class;
   
   ----------- end diff -----------

Fixer is part of the following rule sets:
* @PHP80Migration:risky with default config
* @PHP82Migration:risky with default config
* @Symfony:risky with default config

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[samsonasik]

Thank you @paulbalandan