Finish converting all events to jspecify annotations

patches/api/Slime-Pathfinder-Events.patch

@@ -89,6 +89,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +     *
 +     * @return The Slime that is pathfinding.
 +     */
++    @Override
 +    public Slime getEntity() {
 +        return (Slime) super.getEntity();
 +    }
@@ -103,6 +104,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        this.cancelled = cancel;
 +    }
 +
++    @Override
 +    public HandlerList getHandlers() {
 +        return HANDLER_LIST;
 +    }