Custom Mobs Framework

Added

• Added scrollbar and mouse scroll wheel support to the custom mobs list in the creator sidebar.
• Added a search box to the RPG Mob Spawner block configuration screen to filter custom mobs.
• Added a string-based params Map to LootItemData (matching the AI goals system) to store raw text input fields.

Fixed

• Fixed a major bug where playtesters could not click on or edit the Loot tab textboxes (Loot Chance, Min Qty, Max Qty) because hidden widgets from other tabs (like the General tab's multi-line loreField) were blocking clicks.
• Fixed textboxes resetting, freezing, or locking up on the Loot tab by reading and parsing values from the new string parameter map instead of writing directly to double/integer fields.
• Fixed coordinates, layout rendering, and click boundaries on the Spawner screen to accommodate the new search bar.

Removed

• Removed inactive/hidden widgets from the screen's active child hierarchy when switching tabs, preventing background inputs from intercepting mouse clicks.