Set missing code_review workflow feature_categories

spec/serializers/context_commits_diff_entity_spec.rb

spec/serializers/diff_file_entity_spec.rb

spec/serializers/diff_file_metadata_entity_spec.rb

spec/serializers/diff_viewer_entity_spec.rb

spec/serializers/diffs_entity_spec.rb

spec/serializers/diffs_metadata_entity_spec.rb

spec/serializers/merge_request_basic_entity_spec.rb

spec/serializers/merge_request_current_user_entity_spec.rb

spec/serializers/merge_request_diff_entity_spec.rb

spec/serializers/merge_request_serializer_spec.rb

spec/serializers/merge_request_sidebar_basic_entity_spec.rb

spec/serializers/merge_request_sidebar_extras_entity_spec.rb

spec/serializers/paginated_diff_entity_spec.rb