jest - Fix ReferenceError: vanillaJsAPI is not defined
jest - Fix ReferenceError: vanillaJsAPI is not defined

because jest tests don't load any packs first, we need to set `window.vanillaJsAPI` before using it now

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic