Update and clean up code with test deletions

[sky51100]

Shards of Orr (Behavior Tree)

Current progress:

• Party creation and multibox initialization.
• Automatic quest abandonment / acquisition (multibox).
• Consumables, consets and summoning stone support.
• Full dungeon completion (Levels 1–3).
• Torch, brazier and lock handling.
• Fendi encounter.
• Final chest opening (multibox).
• Inside / outside reward handling.
• Automatic restart loop.

CoreLib

New BT nodes

• Added PickupGroundItemByModelID().
• Added AbandonQuest() with multibox support.
• Added WaitForQuestState().
• Added several multibox helper nodes.

Improvements

• Extended numerous existing BT wrappers with additional optional parameters.
• Improved player, item, gadget and quest interaction helpers.
• Improved multibox synchronization and shared command handling.
• Improved target interaction and automatic dialog workflows.
• Improved movement and interaction routines.
• Added generic functionality extracted from Shards of Orr for reuse in future BT scripts.

Misc

• Various fixes, cleanup and refactoring.
• Backward compatible changes only.

Other

• Updated Chahbek Village to be fully Behavior Tree compliant.
• Fixed Chahbek Village to work with the latest Guild Wars changes affecting access through Embark Beach and Great Temple of Balthazar.
• Corrected CharacterFinalDelete child offsets to ChildOffsets=[5,1,16,2].