BadRequestHttpException: input value contains a non-scalar value

Problem/Motivation

When submitting a date range with an exposed filter in a View, after upgrading to Symfony 6, you may receive a message like this:

Symfony\Component\HttpKernel\Exception\BadRequestHttpException: Input value "field_dates" contains a non-scalar value. in Symfony\Component\HttpKernel\HttpKernel->handle() (line 83 of /app/vendor/symfony/http-kernel/HttpKernel.php).

Steps to reproduce

Using a version of Drupal > 10, create a View with an exposed date filter on a smart_date_recur field. Set the filter operator to "Is between" so that the filter submits a [min] and [max] value. Upon submitting the form, you will see "A client error happened," and the above error message will appear in the logs.

Proposed resolution

As documented at https://stackoverflow.com/questions/77230889/how-do-i-fix-symfony-6-erro... , any occurrence of ->request->get($form_name) needs to be changed to ->request->all($form_name). The equivalent in Drupalese looks like \Drupal::request()->query->get($field_name). This code appears on line 163 of SmartDateRecurrenceFormatter.php. Changing it from get() to all() fixes the problem.

Remaining tasks

Make a fork and MR.