D10 - Fix intermittent test failure with billing blocks

[jitendrapurohit]

Overview

Fix iats test failure

Before

Fails https://github.com/colemanw/webform_civicrm/actions/runs/9020820999

Drupal\\Tests\\webform\_civicrm\\FunctionalJavascript\\ContributionIatsTest::testSubmitACHEFTContribution

[28](https://github.com/colemanw/webform_civicrm/actions/runs/9020820999/job/24800162518#step:24:29)
Behat\\Mink\\Exception\\ElementNotFoundException: 
Form field with id|name|label|value|placeholder "Account Holder" not found.

After

Pass

Technical Details

Add values to billing fields before filling iats fields, so it gets time to load.

Comments

@KarinG