Fix client crash on Limbo server connection (Line 329 in PlayerProperties.java)

[KitsunePaw]

Replaced orElseThrow() with orElse(null).

In Limbo worlds, the enchantment registry is not populated. Calling orElseThrow() throws a NoSuchElementException when looking up the mending enchantment, causing the client to crash during frame rendering. 26.2 tested.

Tnx u for mod :)