Browser support for CSS / JSON Module scripts (including Import Attributes)

[thescientist13]

Coming out of #1268 / #1269, wanted to track upstream browser support and hopefully getting this into browsers for the next baseline cutline 🤞

Browser	Chrome	Firefox	Safari	Safari TP
Import Attributes	✅	🚫	🚫	✅
CSS	✅	🚫	🚫	🚫
JSON	✅	🚫	🚫	🚫

[thescientist13]

Here are the Interop issues to track for 2025

• Import Attributes web-platform-tests/interop#733
• CSS Module Scripts web-platform-tests/interop#703
• JSON Module Scripts web-platform-tests/interop#705