Drupal 10 Compatibility

Hi,

Further development will continue in the 2.0.x branch.

Please, try to fix the following errors and test your changes manually on each of the latest 9.x and 10.x versions:

drugan@test-xattributes-web:/var/www/html$ vendor/bin/phpstan analyze -l 0 web/modules/contrib/commerce_xattributes-3383392/
 13/13 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

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  Line   modules/commerce_cattributes/commerce_cattributes.module                                            
 ------ ---------------------------------------------------------------------------------------------------- 
  45     Inner named functions are not supported by PHPStan. Consider refactoring to an anonymous function,  
         class method, or a top-level-defined function. See issue #165                                       
         (https://github.com/phpstan/phpstan/issues/165) for more details.                                   
 ------ ---------------------------------------------------------------------------------------------------- 

 ------ ------------------------------------------------------------------------------------------------------- 
  Line   modules/commerce_cattributes/src/Plugin/Field/FieldWidget/CorrectProductVariationAttributesWidget.php  
 ------ ------------------------------------------------------------------------------------------------------- 
  120    Unsafe usage of new static().                                                                          
         💡 See: https://phpstan.org/blog/solving-phpstan-error-unsafe-usage-of-new-static                      
 ------ ------------------------------------------------------------------------------------------------------- 

 ------ --------------------------------------------------------------------------------------------------- 
  Line   src/Form/XattributesProductVariationTypeForm.php                                                   
 ------ --------------------------------------------------------------------------------------------------- 
  92     Method Drupal\commerce_xattributes\Form\XattributesProductVariationTypeForm::save() should return  
         int but return statement is missing.                                                               
 ------ --------------------------------------------------------------------------------------------------- 

                                                                                                               
 [ERROR] Found 3 errors                                                                                        
                                     

drugan → closed merge request !1