URL path aliases for long paths with infinite depth parents (and breadcrumbs)

[finnlewis]

URL alias length by default is 100 characters.

Maximum is 255 characters.

Allowing service landing pages to reference other service landing pages as parents allows infinite depth.

URL Path Aliases with break after 100 characters.

Breadcrumb will break too.

So this is a IA problem.

For example: https://localgov.ddev.site/adult-health-and-social-care/second-level/third/fourth-service-land-page/fifth-level-service-0

@andybroomfield : could we truncate from the start of the path alias, rather than the end? This would allow the page title to still be present in the path alias!

Here's where we work some magic: https://github.com/localgovdrupal/localgov_services/blob/2.x/modules/localgov_services_navigation/localgov_services_navigation.module#L69