EuiGlobalToastListItem convert to TS

[theodesp]

Summary

Converted EuiGlobalToastListItem to TS

Checklist

• This was checked in mobile
• This was checked in IE11
• This was checked in dark mode
• Any props added have proper autodocs
• Documentation examples were added
• A changelog entry exists and is marked appropriately
• This was checked for breaking changes and labeled appropriately
• Jest tests were updated or added to match the most common scenarios
• This was checked against keyboard-only and screenreader scenarios
• This required updates to Framer X components

[elasticmachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[thompsongl]

Given the requests in global_toast_list_item.tsx, my read is that we should restrict its children to EuiToast components and make the prop required. I'd like @chandlerprall's input on that decision, though

[chandlerprall]

Given the requests in global_toast_list_item.tsx, my read is that we should restrict its children to EuiToast components and make the prop required.

I agree, but I've been having difficulty getting that kind of typing against children to work (spent a few hours yesterday doing a similar thing with #1879). I'll keep playing with it, as that would be a very powerful tool for us to have available.

[chandlerprall]

TypeScript does not support restricting children beyond ReactElement (microsoft/TypeScript#21699). Until then, use ReactElement and we'll track this occurrence in #1890

[theodesp]

@thompsongl PR updated Ta

[thompsongl]

Good to go after this last change