Govuk dropdown styling

[chfoster]

Pull request overview

Update single-selection dropdowns to use shinygovstyle::select_input() for styling and accessibility purposes, close #80

Pull request checklist

Please check if your PR fulfills the following:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Tests have been run locally and are passing (shinytest2::test_app())
• Code is styled according to tidyverse styling (checked locally with styler::style_dir() and lintr::lint_dir())

What is the current behaviour?

Current dropdowns use selectizeInput() as below

What is the new behaviour?

New dropdowns use shinyGovstyle::select_Input():

Anything else

NOTE there is still a remaining selectizeInput() that currently allows multiple selections, as there is no functionality for this yet in shinyGovstyle. We might want to create a new issue for this.

[cjrace]

Gave this a quick test locally and all seems to work as expected.

Assuming we'll probably remove the extra CSS when we update the template to use bslib and change up the well panel where the dropdowns live but can worry about that in a later PR.