ArgumentCountError: Too few arguments to function Drupal\content_moderation\StateTransitionValidation::isTransitionValid(), 4 passed in /app/web/modules/contrib/moderation_state_buttons_widget/src/ModerationStateButtonsWidgetInfo.php on line 114 and exactly 5 expected in Drupal\content_moderation\StateTransitionValidation->isTransitionValid() (line 55 of /app/web/core/modules/content_moderation/src/StateTransitionValidation.php)
Solution:
Need to pass $entity to the function isTransitionValid(), its required since 9.0.x
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