TASK: Initialize.js makes loadCookiebannerHtml parameters explicit

[gjwnc]

The feature hideBeforeInteraction does not work, because, currently, the parameters for loadCookiebannerHtml are used in strict equality comparision, e.g. here, but most of the time, no parameters are given at all, which causes the comparision to fail, because undefined !== false.
This PR set the parameters for loadCookiebannerHtml explicit to false causing hideBeforeInteraction to function correctly.