Changes to Mark the task seen by the caller [write]

added the new browser_handoff enum value to the task/requests/items/kind response property for the response status 200

added the new connect_account enum value to the task/requests/items/kind response property for the response status 200

added the new spend enum value to the task/requests/items/kind response property for the response status 200

added the optional property error/request_id to the response with the default status

added the optional property task/agent_fees to the response with the 200 status

added the optional property task/consumed_cost/amount_usd to the response with the 200 status

added the optional property task/consumed_cost/unit to the response with the 200 status

added the optional property task/payer to the response with the 200 status

added the optional property task/sessions/items/consumed_cost/amount_usd to the response with the 200 status

added the optional property task/sessions/items/consumed_cost/unit to the response with the 200 status

added the optional property task/sessions/items/model_paid_by to the response with the 200 status

added the required property task/completion_answer to the response with the 200 status