Alterac vendors selling items without adjustments

### What client do you play on?

enUS

### Faction

- [X] Alliance
- [X] Horde

### Content Phase:

- [ ] Generic
- [ ] 1-19
- [ ] 20-29
- [ ] 30-39
- [ ] 40-49
- [X] 50-59

### Current Behaviour

Original report: https://github.com/chromiecraft/chromiecraft/issues/2515

CC staff decided to introduce non-blizzlike adjustments to the PvP Vendors for Warsong Gulch, Arathi Basin and Alterac Valley factions.

But, for Alterac Valley Factions, only 1 of 2 vendors per faction got adjusted. Thus, right now there is one vendor selling a restricted amount of items for an increased price (in the open world / capital city) and one blizzlike vendor within Alterac Valley per faction.

Tester:

Probably it's about [Grunnda Wolfheart](https://wowgaming.altervista.org/aowow/?npc=13218) and [Gaelden Hammersmith](https://wowgaming.altervista.org/aowow/?npc=13216)

### Expected Blizzlike Behaviour

The 4 vendors should sell their factions respective items for the same price and offer the same items.

### Source

X

### Steps to reproduce the problem

Check AV vendor in SW / OG (which are originally supposed to stand in Hillsbrad / Alterac Mountains only.
Then compare both vendors accessible within the battleground AV.

### Extra Notes

_No response_

### AC rev. hash/commit

https://github.com/chromiecraft/azerothcore-wotlk/commit/fc4b5a93a0318610e14af3a3bb50a1719f5ee765

### 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

Start by reproducing the discrepancy described for the Alterac Valley vendors, comparing Grunnda Wolfheart and Gaelden Hammersmith in the capital or open-world locations with the vendors inside the battleground. Trace where these four vendors' item lists and prices are defined, then verify that each faction's pair offers the same items at the same prices.

Written by the indexing model from the issue text.