Cornerstone 6.9.0 for March 23, 2023

Theme

6.9.0

Fix sold-out badge appearance. #2315

Remove xlink attributes on svg. #2322

Bump Stencil utils to 6.15.0. #2327

form.serialize() ignores dropdown option elements that have the disabled attribute. #2326

Extended BigCommerce.accountPayments app initialization interface. #2317

Gift certificate CSS properties are applied to page after previewing gift certificate on storefront. #2330

Translation Gap: Submit Return Request button. #2331