fix(tuya): retry once on a stale persistent socket before reporting offline

[Developer-Simon]

Squash-merge commit message

fix(tuya): retry once on a stale persistent socket before reporting offline

The Tuya valve bridge polls each device over a persistent TinyTuya
socket. Production logs show that socket returning "Unexpected
Payload from Device" (Err 904) on roughly every second poll, right
after a preceding successful poll on the same connection - a fresh
reconnect always succeeds immediately after. poll_one previously
treated any single failed poll as a hard offline flip, so this
alternation showed up as the valve flapping online/offline every
poll interval. Now a failed status() call reconnects and retries
once in the same cycle before giving up.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Summary

Checklist

• Subject line follows Conventional Commits
  (type(scope): summary) and matches the style in git log.
• Relevant checks from
  CONTRIBUTING.md → Running the checks
  pass locally (Python bridges, HA integration, Go dashboard, dashboard JS,
  dashboard smoke test — whichever the change touches).
• ./scripts/deploy/check_tracked_secrets.sh is clean — no real
  credentials, private-range IPs, or device serials.
• AI assistance, if any, is disclosed per
  AI-DISCLAIMER.md.
• For anything beyond a small fix: a linked issue describing the change.