Fix displaying currency in the Cart Summary block

Problem/Motivation

In the Smoke Test we have a step to check the Cart Summary block, which is commented out now:

    // @todo Fix cart currency issues and enable this check for both modules.
    if (browser.globals.ct.testingModuleName === 'off') {

Actually, there is an issue there in the block, it shows the prices in the wrong currency:

We need to fix this and uncomment the test block for both modules.