MidnightDKP 0.9.222 - Visual Header + Reoffer Sync Fix

Base: 0.9.221 NeedBidderWindowFix.

VISUAL
- Removed Blizzard decorative cartouche from the auction popup header.
- Kept the auction title text directly in the popup.
- Rebuilt the main title holder so MIDNIGHT DKP and its Blizzard cartouche share the same center.
- MIDNIGHT DKP is centered vertically/horizontally in the main cartouche.

REOFFER / NETWORK
- ReofferItem now starts a new production auction with sourceType=REOFFER.
- Start still sends normal OPEN packets.
- Reoffer then sends authoritative REOPEN packets for additional synchronization.
- Clients accept REOPEN from the current raid leader as an OPEN-equivalent.
- REOPEN forcibly clears an incompatible stale local auction before installing the new one.
- REOPEN is sent three times (immediate, +0.45s, +1.10s) to survive the refund/sync burst.
- This fixes reoffered loot appearing only on the authority client after journal revocation.

- Need bidder window fix from 0.9.221 preserved.
- Version synchronized in Core.lua and MidnightDKP.toc.
