Fix a bad mixin declaration in lifecycle events

Author: calmilamsy

station-lifecycle-events-v0/src/main/resources/station-lifecycle-events-v0.mixins.json

@@ -3,12 +3,10 @@
   "minVersion": "0.8",
   "package": "net.modificationstation.stationapi.mixin.lifecycle",
   "compatibilityLevel": "JAVA_17",
-  "mixins": [
-    "server.ServerPlayNetworkHandlerMixin"
-  ],
   "server": [
     "server.MinecraftServerMixin",
-    "server.ServerLoginNetworkHandlerMixin"
+    "server.ServerLoginNetworkHandlerMixin",
+    "server.ServerPlayNetworkHandlerMixin"
   ],
   "client": [
     "client.ClientNetworkHandlerMixin",