Fix meat entity rendering: correct image paths and add class name sprite mappings

[Copilot]

Placing bear meat triggered a warning about unknown entity type 'BearMeat' and rendered as a colored square fallback instead of the proper sprite.

Root cause: Server sends entity type as Java class name (BearMeat) but client sprite dictionary only mapped entity display names (Bear Meat). Additionally, meat entities referenced wrong image files.

Server changes:

• BearMeat.java: Changed image path from bear.png → bearMeat.png
• ChickenMeat.java: Changed image path from chicken.png → chickenMeat.png

Client changes:

• Added class name mappings to sprite dictionary for lookup by entity type:

  # Mapped by class name (entity type) for entities where type != name
  'BearMeat': "assets/images/bearMeat.png",
  'ChickenMeat': "assets/images/chickenMeat.png",
  'DeerMeat': "assets/images/deerMeat.png",

Meat entities now render with correct sprites instead of fallback colored squares.

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.