Fast corpse despawn in UBRS

### What client do you play on?

enGB

### Faction

- [X] Alliance
- [X] Horde

### Content Phase:

- [X] 50-59

### Current Behaviour

Original report: https://github.com/chromiecraft/chromiecraft/issues/2338

[General Drakkisath](https://wowgaming.altervista.org/aowow/?npc=10363) despawned after 5 minutes while players where still rolling for the items.

Tester:

The issue is confirmed. Corpses of bosses despawn timer is 5m

### Expected Behaviour

To prevent despawn corpse with loot add to [UBRS bosses](https://wowgaming.altervista.org/aowow/?zone=1583) bigger timer. As it was mentioned in discord: make them boss type instead of elite. Maybe something else.

### Source

_No response_

### Steps to reproduce the problem

.go c id 10363
.damage 500000

### Extra Notes

_No response_

### AC rev. hash/commit

https://github.com/chromiecraft/azerothcore-wotlk/commit/03c84db04dd7bce2a8aa5e527aeec2640c6fa7eb

### Operating system

Ubuntu 20.04

### Modules

- [mod-ah-bot](https://github.com/azerothcore/mod-ah-bot)
- [mod-cfbg](https://github.com/azerothcore/mod-cfbg)
- [mod-chat-transmitter](https://github.com/azerothcore/mod-chat-transmitter)
- [mod-chromie-xp](https://github.com/azerothcore/mod-chromie-xp)
- [mod-desertion-warnings](https://github.com/azerothcore/mod-desertion-warnings)
- [mod-duel-reset](https://github.com/azerothcore/mod-duel-reset)
- [mod-eluna-lua-engine](https://github.com/azerothcore/mod-eluna-lua-engine)
- [mod-ip-tracker](https://github.com/azerothcore/mod-ip-tracker)
- [mod-low-level-arena](https://github.com/azerothcore/mod-low-level-arena)
- [mod-multi-client-check](https://github.com/azerothcore/mod-multi-client-check)
- [mod-pvp-titles](https://github.com/azerothcore/mod-pvp-titles)
- [mod-pvpstats-announcer](https://github.com/azerothcore/mod-pvpstats-announcer)
- [mod-queue-list-cache](https://github.com/azerothcore/mod-queue-list-cache)
- [mod-server-auto-shutdown](https://github.com/azerothcore/mod-server-auto-shutdown)
- [lua-carbon-copy](https://github.com/55Honey/Acore_CarbonCopy)
- [lua-custom-worldboss](https://github.com/55Honey/Acore_CustomWorldboss)
- [lua-level-up-reward](https://github.com/55Honey/Acore_LevelUpReward)
- [lua-recruit-a-friend](https://github.com/55Honey/Acore_RecruitAFriend)
- [lua-send-and-bind](https://github.com/55Honey/Acore_SendAndBind)
- [lua-temp-announcements](https://github.com/55Honey/Acore_TempAnnouncements)
- [lua-zonecheck](https://github.com/55Honey/acore_Zonecheck)
- [lua-zone-debuff](https://github.com/55Honey/Acore_ZoneDebuff)

### Customizations

None

### Server

ChromieCraft

Reproduce the report with `.go c id 10363` followed by `.damage 500000`, then inspect how UBRS boss corpses are classified and timed after death. Done means a looted General Drakkisath corpse, and the other UBRS boss corpses, remains available beyond five minutes while players are rolling for items.

Written by the indexing model from the issue text.