Elytra+

Bug fix: the "elytra never breaks" toggle now works on servers, and turning it off actually lets your elytra take damage again.

Fixed

• "Never breaks" now respects your toggle on multiplayer servers. This option is enforced by the server, but your choice was never being sent to it — so on a server the toggle did nothing, and an elytra that had been made unbreakable stayed unbreakable even after you switched the option off. Your preference is now synced to the server, so toggling it on or off takes effect (still subject to the server's assist policy and needing cheats/operator permission).
• The same sync fix also applies to Safe flight (no glide-into-wall damage), which had the same server-side issue.

Singleplayer was already working and is unchanged.