UHF-10276: Replace old dialog.js implementation from forms

[teroelonen]

UHF-10276

What was done

• Refactored survey and dialog to use same styles.

How to install

• Check installation instructions from the grants PR

How to test

• Check testing instructions from the grants PR
• Check that code follows our standards

Continuous documentation

• This feature has been documented/the documentation has been updated
• This change doesn't require updates to the documentation

Other PRs

• UHF-10276: Replace old dialog.js implementation from forms hel-fi-drupal-grants#1511
• UHF-10276: Replace old dialog.js implementation from forms #1084

[github-actions]

⚠️ Visual regression found! Please check if this change is wanted or accidental. You can check the output here: https://city-of-helsinki.github.io/drupal-hdbt/pull/1084/html_report/

[jiisuominen]

Works on Grants PR.