IPv6 on the polyfills.io apex domain

[tambry]

What

polyfills.io lacks AAAA records and thus IPv6 support.

Details

IPv6 support was otherwise enabled as part of #2624, but it seems the polyfills.io apex domain was missed. I noticed it's being used for example by Floatplane instead of polyfill.io or cdn.polyfills.io.

Additional information

The AAA record set is the same as it is for polyfill.io:

2a04:4e42::282
2a04:4e42:200::282
2a04:4e42:400::282
2a04:4e42:600::282
2a04:4e42:800::282
2a04:4e42:a00::282
2a04:4e42:c00::282
2a04:4e42:e00::282

Confirmed as working using curl 'https://[2a04:4e42::282]/v3/polyfill.min.js?flags=gated&features=default%2Ces7%2Ces6%2Ces5%2Ces2017%2CWebAnimations%2CURL' -H "Host:polyfills.io" -k -6 -I.