Changes to List saved extraction pipelines

removed the required property items/items/ocr_options/chart_recognition from the response with the 200 status

removed the required property items/items/ocr_options/image_block_ocr from the response with the 200 status

removed the required property items/items/ocr_options/merge_layout_blocks from the response with the 200 status

added 'propertyNames' constraint to the items/items/ocr_options response property for the status 200