Changes to List coding sessions

query request parameter client_reference list-of-types was narrowed by removing types null

query request parameter cursor list-of-types was narrowed by removing types null

for the query request parameter client_reference, the minLength was increased from 0 to 1

added the pattern ^[A-Za-z0-9_.:-]+$ to the query request parameter client_reference

for the query request parameter client_reference, the maxLength was set to 200

for the query request parameter cursor, the maxLength was set to 2048

for the query request parameter client_reference, the type was generalized from no type to string

for the query request parameter cursor, the type was generalized from no type to string

added the optional property items/items/has_unpublished_changes to the response with the 200 status

removed the non-success response with the status 500

added the optional property items/items/outcome to the response with the 200 status

added the optional property items/items/summary to the response with the 200 status

endpoint added