fix(AttributeSwap): handle entity hits before spear checks and respect Hitboxes expansion

[Eccys]

Type of change

• Bug fix
• New feature

Description

Fixes several smart/spear swapping issues in AttributeSwap:

1. In Minecraft.startAttack(), DoAttackEvent (onAttack) fires at HEAD before DataComponents.PIERCING_WEAPON is checked on the main-hand item. If the player holds a spear (or if onAttack swaps to a spear), startAttack() calls gameMode.piercingAttack() and returns early without calling gameMode.attack(), preventing AttackEntityEvent (onAttackEntity) from firing. Handling EntityHitResult directly in onAttack via performSwap ensures that attacking an entity in melee/hitbox range properly swaps to a Mace, Axe, or Sword even when holding a spear, and prevents entity hits from falling through to the missed-attack spearHitbox / enchantLunge logic.
2. Includes Hitboxes.getEntityValue(entity) when inflating entity bounding boxes in getTargetEntity() so extended hitbox attacks do not miss the target check and erroneously swap to a Lunge spear.
3. Prevents spearHitbox from falling through to enchantLunge when a target entity is present and excludeLungeFromHitbox is enabled, and checks the currently selected hotbar slot first in getSmartSpearSlot.
4. Adds the missing spear toggle to Weapon Options (only-on-weapon).

Related issues

Fixes #6226
Fixes #6560

How Has This Been Tested?

Verified compilation against Minecraft 26.2 (./gradlew compileJava) and tested smart/simple swapping behavior with spears, maces, axes, swords, and the Hitboxes module.

Checklist:

• My code follows the style guidelines of this project.
• I have added comments to my code in more complex areas.
• I have tested the code in both development and production environments.