UHF-10236: Accessibility fixes for search monitor

[teroelonen]

UHF-10236

What was done

• Added aria-expanded attribute for the search monitor toggle button.
  Change the text on the button to be more descriptive.
  Add focus change when ordering a new search monitor has succeeded of failed.

How to install

• Check installation instructions from the Rekry PR

How to test

• Check testing instructions from the Rekry 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

Translations

• Translations have been added to .po -files and included in this PR

Other PRs

• UHF-10236: Accessibility fixes for search monitor drupal-helfi-rekry#514
• UHF-10236: Accessibility fixes for search monitor #1016

[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/1016/html_report/

[sundflux]

Seems to work