Localize Text doesn't localize string attributes of non-core blocks #869

What happens

"Localize Text" only localizes attributes of core blocks. get_localizable_block_attributes() is a fixed list (Search, pagination links, Navigation Link, Read More, …):

https://github.com/WordPress/create-block-theme/blob/5524f195e8/includes/create-theme/theme-locale.php#L272-L294

String attributes of other blocks are exported as-is. For example, WooCommerce's Mini-Cart shopping button:

<!-- wp:woocommerce/mini-cart-shopping-button-block {"startShoppingButtonLabel":"Shop"} -->

Expected

User-facing string attributes of any block are wrapped in esc_attr__().

Suggested fix

Instead of a hardcoded list, localize string attributes whose block.json definition has "role": "content" (the same signal the editor uses for content-only editing), and keep the list as a fallback for core blocks that don't declare it.

Drafted with AI assistance, verified by me against a theme exported with Create Block Theme and the source.