Guard recursive Lua table bitstream reads

[Zephkek]

Summary

• add a 64-level recursion limit when reading nested Lua tables from bitstreams
• apply the guard on both client and server deserialization paths
• preserve existing call sites by threading depth through defaulted parameters

Why

The public source currently allows unbounded recursive LUA_TTABLE reads from the bitstream serializer. A crafted packet can drive recursive descent until deserialization fails from stack exhaustion or excessive recursion.

Current shipped binaries already enforce a 64-level limit in this path. This change brings the public source in line with that behavior so downstream forks and public builds do not keep the unbounded recursion path.

Testing

• validated the touched files with editor diagnostics
• manually reviewed the nested-table bitstream read path to confirm inputs deeper than 64 levels now fail deserialization
• reviewed the patch scope to confirm it only changes the bitstream table read path

[qaisjp]

Nice find, thanks!