Changes to Batch unread counts

added the required property counts_by_user/additionalProperties/channels/items/has_unread to the response with the 201 status

added the optional property cooldown_remaining_ms to the response with the 400 status

added the optional property cooldown_remaining_ms to the response with the 429 status

the user_ids request property's minItems was increased to 1

the user_ids request property's min was set to 1.00

the response property counts_by_user/additionalProperties/total_unread_count_by_team became optional for the status 201

added the required property counts_by_user/additionalProperties/total_unread_count_by_team to the response with the 201 status

added the optional property unrecoverable to the response with the 400 status

added the optional property unrecoverable to the response with the 429 status

api tag product:chat added

api tag Channels removed

endpoint added