Consider using `:user-invalid` instead of `:invalid`

[j-m]

Hey folks! 👋🏻 There's a new CSS psuedo selector that's now widely adopted which you might like, :user-invalid, which reminded me of an I raised issue here a while ago https://github.com/elastic/eui/issues/4710 That was all! Hi, bye

[cee-chen]

Oh snap!!! Browser support looks perfect - can't wait to give this a spin!

[cee-chen]

Thanks so much @j-m, you're a rock star! :)

[github-actions[bot]]

👋 Hi there - this issue hasn't had any activity in 6 months. If the EUI team has not explicitly expressed that this is something on our roadmap, it's unlikely that we'll pick this issue up. We would sincerely appreciate a PR/community contribution if this is something that matters to you! If not, and there is no further activity on this issue for another 6 months (i.e. it's stale for over a year), the issue will be auto-closed.