MidnightDKP 0.9.217 - DKP Raid Loot Safety

- Added LootControl:IsRaidDKPEligible().
- Group Loot automation now fails closed if DKP raid status is unavailable.
- PASS automatique is blocked unless MDKP:GetGuildRaidDKPStatus().allowed == true.
- This prevents automatic PASS in PU/non-guild raids or below the configured guild threshold.
- Authority GREED automation is protected by the same DKP raid eligibility check.
- In a non-eligible DKP raid MidnightDKP no longer performs automatic Blizzard Group Loot actions.
- Existing session, item-quality and boss-loot-window checks remain in place.
- No change to manual Blizzard Need/Greed/Pass choices.
