Fix remove button keyboard focus on whitelist
Fix remove button keyboard focus on whitelist

Replicates @pcraig3’s work here:
https://github.com/alphagov/digitalmarketplace-frontend-toolkit/pull/333

gov-cjwaszczuk/notifications-admin,alphagov/notifications-admin,gov-cjwaszczuk/notifications-admin,gov-cjwaszczuk/notifications-admin,alphagov/notifications-admin,gov-cjwaszczuk/notifications-admin,alphagov/notifications-admin,alphagov/notifications-admin