build(agentserver): rebuild demo wheels — responses durability fix + de-bloat

- responses wheel now carries the agent_reference durable-input
  serialization fix (durable background responses were silently degrading
  to non-durable asyncio.create_task on hosted).
- All three wheels rebuilt from clean trees: the previously checked-in
  wheels had bundled stale build/lib/** duplicates (core 612KB->157KB,
  invocations 722KB->20KB, responses 1.3MB->336KB) with no functional change
  beyond the responses fix.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: RaviPidaparthi