Changes to List schemas

the results/items response's property type changed from object to no type for status 200

the results/items/allOf[subschema #2] response's property type changed from object to no type for status 200

removed the optional property results/items/allOf[subschema #2]/content from the response with the 200 status

added the optional property results/items/allOf[#/components/schemas/schema_base -> subschema #1: Schema object]/content to the response with the 200 status