kagi-not-working
If your hardware or operating system is no longer supported with security fixes I don't think it's reasonable to expect full functionality, having to fall back to older development strategies can be quite a burden on many developers.
Ideally though, Kagi search works without JS altogether, relying on progressive enhancement to enable features that would need it, though that could be very difficult depending on how Kagi is developed. But perhaps that's the better thing to ask for to enable situations like yours.