Remove UpsellPageComponent

[oliverguenther]

Ticket

https://community.openproject.org/projects/gmbh/work_packages/64212/activity

What are you trying to accomplish?

• Remove UpsellPageComponents with the new large banner variant.
• Introduce a guard_enterprise_feature helper as discussed in the dev open door

    guard_enterprise_feature(:ldap_groups, except: %i[index]) do
      redirect_to action: :index
    end

Note: Not all pages have their upsell flow removed completely. For example, onedrive/sharepoint still refers to a separate landing page. We can discuss separately if a trial banner is required here, and how the page should behave like in this case.

Merge checklist

• Added/updated tests
• Added/updated documentation in Lookbook (patterns, previews, etc)
• Tested major browsers (Chrome, Firefox, Edge, ...)

[HDinger]

The changes look good overall. The only issue I found is some inconsistnecy with regards to showing a PageHeader or not. I'd be in favour of showing the PageHeaders now. Those are the pages I found which are currently missing the PageHeader:

• Notification/Date alerts
• Notification/Sharing
• OneDrive/SharePoint integration
• PlaceholderUsers (see my other comment)
• WP/Sharing queries (might be out of scope since they don't even have a pageHeader yet)

Further, the routes.rb file can be cleaned up a bit, now that we do not have the upsell routes any more.