Finish converting all events to jspecify annotations

patches/api/Add-More-Creeper-API.patch

@@ -51,10 +51,12 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        this.ignited = ignited;
 +    }
 +
++    @Override
 +    public boolean isCancelled() {
 +        return this.cancelled;
 +    }
 +
++    @Override
 +    public void setCancelled(final boolean cancel) {
 +        this.cancelled = cancel;
 +    }