Explicitly set jquery-blockui as a dependency for wc-sb-order-status-check script

[lakrisgubben]

Hi,

the wc-sb-order-status-check script, registered here depends on jquery-blockui but it is not explicitly set as a dependency. This usually isn't a problem since WooCommerce enqueues jquery-blockuiby default, but if one for any reason has disabled WooCommerce's js, this'll trigger a js-error TypeError: undefined is not a function (near '...$( '.woocommerce-order' ).block...'). Since there's no harm on adding jquery-blockui as a dependency of wc-sb-order-status-check script I'd vote for doing that. :)

[lakrisgubben]

thanks @aait!