Changes to Create a ChatKit session

added the optional property error/misalignment/review_target to the response with the 400 status

added the optional property error/misalignment/review_target to the response with the 404 status

added the optional property error/misalignment/review_target to the response with the 429 status

response property workflow/state_variables/anyOf[subschema #1]/additionalProperties/ list-of-types was widened by adding types null to media type application/json of response 200

added the non-success response with the status 400

added the non-success response with the status 404

added the non-success response with the status 429

endpoint added

the expires_after/seconds request property format changed from no format to int64

endpoint added