Close a Log Review or meal plan the user never answered (REW-1150)

Only for a prize assigned to the caller (404 otherwise), and only once the coach has messaged the user in its chat (can_mark_no_response on the task). Closes it with delivery_outcome: 'user_unresponsive': data-access consent ends as on delivery, the outreach reads no_response, and it doesn't reopen with another coach or count as a coach miss. The chat stays open, and the user's push says the prize is saved with their coach: a reply from them in the next 30 days puts it back on this list with a fresh window, once. Closed again after that, it's simply closed: no push, no reopen window, no new hold. 409 NOT_A_CHAT_PRIZE, NO_OUTREACH, or if already delivered.