Use syntax that works with http-foundation 6.

[rosiel]

What does this Pull Request do?

Solves the problem that advanced search doesn't work in drupal 10.

• Related GitHub Issue: [BUG] Advanced Search breaks in Drupal 10 (symfony/http-foundation v6) #35

• Other Relevant Links: (Google Groups discussion, related pull requests,
  Release pull requests, etc.)

What's new?

• Gets a query parameter in a way that accepts arrays or scalars.

• Does this change add any new dependencies? no, this also works in http-foundation 4 (drupal 9 version)

• Does this change require any other modifications to be made to the repository
  (i.e. Regeneration activity, etc.)? no

• Could this change impact execution of existing code? no

How should this be tested?

Launch a site that is running Drupal 10. Until site-template gets fixed, either:

• use this PR
• use commit 0.8.0 of the Starter Site, then update to Drupal 10.

Create some content. Note that you can't use advanced search to find the content and errors appear in the logs. (replicate the bug).
With this PR, you should be able to find content and the logs should have no errors.

Documentation Status

• Does this change existing behaviour that's currently documented? no
• Does this change require new pages or sections of documentation? no
• Who does this need to be documented for? no
• Associated documentation pull request(s): ___ or documentation issue ___ n/a

Additional Notes:

Any additional information that you think would be helpful when reviewing this
PR.

Interested parties

Tag (@ mention) interested parties or, if unsure, @Islandora/committers

[wgilling]

I am trying to use Docker Desktop on my ubuntu machine and I should be able to test this, but it feels like this laptop is going to overheat.

[aOelschlager]

I just tested this after running it this issue today. Searches are working again with no errors reported in the logs.