Morphia call fixes; add @Entity to more classes

1. During the conversion of Morphia calls to the new API, some of the `Filter.eq()` calls had their `field` set to `playerId` due to a copy/paste typo.

2. Morphia 2 switches to the codec system, so anything that will be serialized in the pipeline requires the `@Entity` annotation.

src/main/java/emu/grasscutter/game/friends/PlayerProfile.java

@@ -4,6 +4,7 @@ import dev.morphia.annotations.*;
 import emu.grasscutter.game.GenshinPlayer;
 import emu.grasscutter.utils.Utils;
 
+@Entity
 public class PlayerProfile {
 	@Transient private GenshinPlayer player;