fix: client crash when trying to send recalling packet after leaving server

[williambl]

fixes #62

If the player leaves the server while SincereLoyalty.failedUseCountdown <= 0 && SincereLoyalty.useTime > 0, then tickTridentRecalling on the next client tick will return a non-null RecallStatus, thus triggering a impaled:recall_tridents packet to be sent. But since the client is not connected to a server, upon trying to send this packet the client crashes.

This is fixed by checking in tickTridentRecalling whether the player is null - if it is, then failedUseCountdown and useTime are reset to 0 and null is returned.

Also two changes without which the mod did not compile for me:

• updated gradle wrapper to 8.8
• updated fabric-loom to 1.7-SNAPSHOT