[Breadcrumb] NPE when using xpages (hst:componentconfigurationid expected)

When using the breadcrumb plugin in combination with xpages an NPE is thrown.

This is due to the to following:

The breadcrumb plugin expects every sitemapitem to have an hst:componentconfigurationid property:

if (hstSiteMapItem.getComponentConfigurationId().endsWith(HST_PAGES_PAGENOTFOUND_ID))

An xpage sitemapitem doesn't require an hst:componentconfigurationid param because the component is defined on the hst:xpage node by using a hst:referencecomponent parameter.