LEFT_CLICK actions don't fire on Minecraft 26.1+ (right-click works fine)

[mjiangmc]

Environment

• Plugin version: 2.1.0 (2.X branch, commit 705962d)
• Server: Minecraft 26.2
• packetevents: 2.13.0

Steps to reproduce

/znpc action add consolecommand test LEFT_CLICK 1 0 minecraft:tell %player_name% test

Left-click the NPC → nothing happens. Right-click the same NPC → works as expected.

Root cause

Starting in Minecraft 26.1, Mojang split "attack / left-click" out of ServerboundInteractPacket (INTERACT_ENTITY) into a new dedicated ServerboundAttackPacket:

• Right-click still goes through INTERACT_ENTITY (action = INTERACT / INTERACT_AT)
• Left-click now goes through the new ATTACK packet (PacketType.Play.Client.ATTACK / WrapperPlayClientAttack in packetevents)

However, InteractionPacketListener only listens for INTERACT_ENTITY:

if (event.getPacketType() != PacketType.Play.Client.INTERACT_ENTITY) return;

So on 26.1+, the ATTACK packet sent on left-click is silently ignored, and LEFT_CLICK actions never fire.

This is confirmed by the packetevents source:

• WrapperPlayClientInteractEntity javadoc: "…or attacks an entity (for versions older than 26.1)"
• On 26.1+ its read() hardcodes action to INTERACT_AT as a compatibility value — the attack action is no longer part of that packet.

Proposed fix

Handle the ATTACK packet in InteractionPacketListener.onPacketReceive and map it to LEFT_CLICK:

InteractionType type;
int entityId;

if (event.getPacketType() == PacketType.Play.Client.INTERACT_ENTITY) {
    WrapperPlayClientInteractEntity packet = new WrapperPlayClientInteractEntity(event);
    entityId = packet.getEntityId();
    type = wrapClickType(packet.getAction());
} else if (event.getPacketType() == PacketType.Play.Client.ATTACK) {
    entityId = new WrapperPlayClientAttack(event).getEntityId();
    type = InteractionType.LEFT_CLICK;
} else {
    return;
}

The rest of the logic (cooldown, NpcInteractEvent, action filtering) is unchanged. The allay workaround condition is equivalently rewritten from action == INTERACT/INTERACT_AT to type == RIGHT_CLICK.