Support SPDX IDs with Dots in License URL Paths

[anastas10s-afk]

Summary:
License URLs to use SPDX identifiers, which contain dots (e.g., /license/apache-2.0), rather than WordPress’s default approach of replacing dots with dashes (/license/apache-2-0).

• Example: https://opensource.org/license/apache-2.0
• Reference SPDX IDs: https://spdx.org/licenses/

Background:
WordPress by default strips dots from URL slugs to avoid conflicts, as dots typically indicate file extensions. Overriding this is technically possible (e.g., with Permalink Manager or a custom function), but it comes with caveats.

Risks/Considerations:

• Dots in URLs may be interpreted by web servers, CDNs (e.g., Cloudflare), or caching layers as file extensions, potentially causing issues with content serving, caching, SEO, or site reliability.
• Future WP updates may change how slugs are sanitized, introducing possible breakage.
• Override would be non-standard (against WP default behavior).

Request / Next Steps:

• The technical risk is understood, but SPDX IDs with dots for canonical URLs would be preferred if possible.
• Plan: We can do some tests in staging first using a custom lightweight sanitize_title function to allow slugs to retain dots.