fix: Solar Isotoma Elevator doesn't work in multiplayer mode (#1848)

src/main/java/emu/grasscutter/server/packet/recv/HandlerUpdateAbilityCreatedMovingPlatformNotify.java

@@ -4,7 +4,6 @@ import emu.grasscutter.game.entity.platform.EntityPlatform;
 import emu.grasscutter.net.packet.Opcodes;
 import emu.grasscutter.net.packet.PacketHandler;
 import emu.grasscutter.net.packet.PacketOpcodes;
-import emu.grasscutter.net.proto.PacketHeadOuterClass;
 import emu.grasscutter.net.proto.UpdateAbilityCreatedMovingPlatformNotifyOuterClass;
 import emu.grasscutter.server.game.GameSession;
 import emu.grasscutter.server.packet.send.PacketPlatformStartRouteNotify;
@@ -14,7 +13,6 @@ import emu.grasscutter.server.packet.send.PacketPlatformStopRouteNotify;
 public class HandlerUpdateAbilityCreatedMovingPlatformNotify extends PacketHandler {
     @Override
     public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
-        var sequence = PacketHeadOuterClass.PacketHead.parseFrom(header).getClientSequenceId();
         var notify = UpdateAbilityCreatedMovingPlatformNotifyOuterClass.UpdateAbilityCreatedMovingPlatformNotify.parseFrom(payload);
         var entity = session.getPlayer().getScene().getEntityById(notify.getEntityId());
 
@@ -22,9 +20,11 @@ public class HandlerUpdateAbilityCreatedMovingPlatformNotify extends PacketHandl
             return;
         }
 
+        var scene = ((EntityPlatform) entity).getOwner().getScene();
+
         switch (notify.getOpType()) {
-            case OP_TYPE_ACTIVATE -> session.send(new PacketPlatformStartRouteNotify(sequence, (EntityPlatform) entity, session.getPlayer().getScene()));
-            case OP_TYPE_DEACTIVATE -> session.send(new PacketPlatformStopRouteNotify(sequence, (EntityPlatform) entity, session.getPlayer().getScene()));
+            case OP_TYPE_ACTIVATE -> scene.broadcastPacket(new PacketPlatformStartRouteNotify((EntityPlatform) entity, scene));
+            case OP_TYPE_DEACTIVATE -> scene.broadcastPacket(new PacketPlatformStopRouteNotify((EntityPlatform) entity, scene));
         }
     }
 }

src/main/java/emu/grasscutter/server/packet/send/PacketPlatformStartRouteNotify.java

@@ -7,8 +7,8 @@ import emu.grasscutter.net.packet.PacketOpcodes;
 import emu.grasscutter.net.proto.PlatformStartRouteNotifyOuterClass;
 
 public class PacketPlatformStartRouteNotify extends BasePacket {
-    public PacketPlatformStartRouteNotify(int clientSequence, EntityPlatform entity, Scene scene) {
-        super(PacketOpcodes.PlatformStartRouteNotify, clientSequence);
+    public PacketPlatformStartRouteNotify(EntityPlatform entity, Scene scene) {
+        super(PacketOpcodes.PlatformStartRouteNotify);
 
         var notify = PlatformStartRouteNotifyOuterClass.PlatformStartRouteNotify.newBuilder()
             .setEntityId(entity.getId())

src/main/java/emu/grasscutter/server/packet/send/PacketPlatformStopRouteNotify.java

@@ -7,8 +7,8 @@ import emu.grasscutter.net.packet.PacketOpcodes;
 import emu.grasscutter.net.proto.PlatformStopRouteNotifyOuterClass;
 
 public class PacketPlatformStopRouteNotify extends BasePacket {
-    public PacketPlatformStopRouteNotify(int clientSequence, EntityPlatform entity, Scene scene) {
-        super(PacketOpcodes.PlatformStopRouteNotify, clientSequence);
+    public PacketPlatformStopRouteNotify(EntityPlatform entity, Scene scene) {
+        super(PacketOpcodes.PlatformStopRouteNotify);
 
         var notify = PlatformStopRouteNotifyOuterClass.PlatformStopRouteNotify.newBuilder()
             .setPlatform(entity.onStopRoute())