Redmine

This patch replaces the jQuery UI dialog with a reimplemented modal dialog with Stimulus. It is assumed that Stimulus has been installed with the #42515 patch.
The new modal dialog uses SVG icons.

I've also created JavaScript tests that run in the browser. I think now would be a good time to add JavaScript testing to the Redmine environment.

• To simplify testing within the importmap environment, I created the importmap_mocha-rails gem , a simple gem that integrates JavaScript testing tools.
• In development or test mode, test results are displayed at http://localhost:3000/rails/info/mocha.
• importmap_mocha-reils can be used in combination with rails_live_reload gem.