For @font-face src tech() and @supports font-tech() we need to determine the technologies supported by the font system of each platform at FontCustomPlatformData::supportsTechnology(FontTech technology, like we did for FontcustomPlatformDataMac.
Re-opening it because I've confirm that this should be platform-specific.
Pull request: https://github.com/WebKit/WebKit/pull/23321
The PR here only covers GTK/WPE, a new bug will need to be filed to cover windows
Committed 273584@main (dda504fbe8ac): <https://commits.webkit.org/273584@main> Reviewed commits have been landed. Closing PR #23321 and removing active labels.
Opened a bug for Windows: https://bugs.webkit.org/show_bug.cgi?id=268249