Returns true if Page has a files path that exists.
This is a way to for
$pages API functions (or others) to check if they should attempt to use
a $page's filesManager, thus ensuring directories aren't created for pages that don't need them.
$bool = PagefilesManager::hasPath(Page $page);
True if a path exists for the page, false if not.
API reference based on ProcessWire core version 3.0.137