UHF-8075: Fix high school cards linking

[teroelonen]

UHF-8075

What was done

• Re-added functionality that was accidentally removed. The functionality makes it possible to add "front page" for the high schools. If front page is not set and www-page is then the high school cards link to that url. If that is not set either then it should link to unit-page. Before the fix all the cards linked to unit-pages.
• The PR where the functionality was removed and where you can check how it was implemented earlier: UHF-7111: Changed high school and vocational school to use unified ca… #278

How to install

• Make sure your instance is up and running on correct branch.
  • git checkout UHF-8075_fix_high_school_card_linking
  • make fresh
• Run make drush-cr

How to test

• Go to https://helfi-kasko.docker.so/en/childhood-and-education/general-upper-secondary-education/general-upper-secondary-schools and make sure the high school cards link to high schools web pages.
• Go edit one of the high schools and add standard page or landing page to the "High school front page" field. After saving the high school card should link to this page.
• Check that code follows our standards.

Designers review

• This PR does not need designers review
• This PR has been visually reviewed by a designer (Name of the designer)

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[dire]

Works as described!