show up to 2 bonemerangs like other weapons instead of 6

[dukio]

https://github.com/SkyCryptWebsite/SkyCrypt/blob/2e2e979df68f1f45015df8795b0ba19d68141813/src/lib.js#L1416-L1422

This was added when bonemerangs were meta, nowadays it doesn't really make sense to still have this... I would simplify the code and keep it at top 2 like every other weapon

[dukio]

Best to do this after #1193 and maybe unify the code to work for all item sections (weapons, mining_tools, farming_tools, fishing_tools)