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

Follow-up to #3610500, which regressed the payments view.

• The state filter was switched to the options (list_field) filter, but state is a base list_string field whose Views data carries no field-storage definition, so the options filter raises a TypeError from options_allowed_values(NULL) when the view is built, and the stored config otherwise falls back to a string handler carrying an operator it does not support. This reverts it to the string filter the view originally shipped with.
• The table style was missing the default table CSS class option, which triggers a deprecation on Drupal 11.2 and is removed in Drupal 12 (change record 3499943). This adds the empty class option so the view is forward-compatible on the next-major lane.
• Adds a kernel test that installs the view and builds it, so a filter the payment fields cannot support is caught in CI instead of on a fresh install.