FP's AntiFreecam

This update introduces significant stability improvements, memory leak fixes, cleaner shutdown handling, and Bedrock/Geyser integration improvements for the Freecam detection engine.

🐛 Bug Fixes & Stability

• Fixed Shutdown Scheduler Crashes (IllegalPluginAccessException):
  • Handled Bukkit's internal lifecycle restriction where BukkitScheduler rejects task registrations once disabling starts. Shutdown tasks now execute inline cleanly on both Paper and Folia region schedulers.
• Fixed EntityHider Disable Warnings:
  • Guarded hideEntity / showEntity calls during server shutdown to prevent CraftPlayer disabled-plugin warnings.
• Fixed Memory Leak in entityYCache:
  • Entities (mobs, items, orbs) registered in the Y-cache are now periodically pruned every 60 seconds against active world entities, preventing unbounded RAM growth on long-running servers with mob farms.
• Preserved Backwards-Compatibility for 1.19.4+:
  • Refactored cache cleanup to avoid relying on newer Paper-only removal events, ensuring 100% compatibility across Paper 1.19.4 through 1.21.x+.

⚡ Freecam & Bedrock Improvements

• Geyser / Floodgate Compatibility:
  • Bedrock players connecting through Geyser/Floodgate are now automatically identified and skipped by the translation-key probe engine to prevent unnecessary GUI packet flashes on Bedrock clients.
• Entity Status & Diagnostics:
  • Added entity cache statistics to /fpafc status for easier monitoring by server administrators.