Issue #3610518: Fix the payments view: revert the unsupported state filter and set a default table CSS class

Follows the issue. Reverts the payments-view state filter to the string handler (the list_field options filter is invalid for the base list_string state field and raises a TypeError on build), adds the default table CSS class to the table style (forward-compatible with Drupal 12, CR 3499943), and adds a kessai_views kernel test that installs and builds the view. Full kessai kernel suite green (34 tests, 193 assertions); phpcs, phpstan and cspell clean locally.