Build stats not accounting for alt weapon skins

[Sendouc]

Bug Description

Build stats are not taking into account alt skins of a weapon. For example, Slosher stats should also include Order Slosher builds, but currently they are counted separately.

Affected Functions

• abilityPointAverages() in app/features/builds/BuildRepository.server.ts
• popularAbilitiesByWeaponId() in app/features/builds/BuildRepository.server.ts

Proposed Fix

The fix involves changing the weapon ID filtering to use weaponIdToArrayWithAlts(weaponSplId) instead of filtering by a single weapon ID:

- .where("BuildWeapon.weaponSplId", "=", weaponSplId)
+ .where(
+   "BuildWeapon.weaponSplId",
+   "in",
+   weaponIdToArrayWithAlts(weaponSplId),
+ )

Additionally, adds groupBy("Build.id") to flatten builds with multiple weapons.

Note: This is not a complete solution. The groupBy("Build.id") would cause problems because the same build would be counted twice for stats. A more comprehensive fix is needed.

Performance testing required: Ensure the query remains efficient with the expanded weapon filtering.