Existing wxt_library config allows some control over what pages it adds libraries too, but there is not full control.
Create wxt_library_add_page_attachments() which does the actual adding and have that be called by wxt_library_page_attachments(). That way, developers can call wxt_library_add_page_attachments() themselves for full control over what pages get the libraries.
Another more elaborate option would be use condition plugins (like blocks) instead of wxt_library's own "Themes Visibility" and "Activate on specific URLs".
Implement.
None.
Addition of wxt_library_add_page_attachments().
None.
Active
11.1
Code
Looks good to me, just an FYI that this will help with the GCDS / WxT theme compatibility for hybrid sites.