Do we use aria-errormessage instead of aria-describedby

[mimarz]

When do we add support for aria-errormessage, should we even though its not fully supported?

We are currently using aria-invalid in combination with aria-describedby which is also an valid option.

Notes:

• Consider deprecating aria-errormessage due to existence of aria-describedby w3c/aria#2048
• Consider deprecating aria-errormessage due to existence of aria-describedby w3c/aria#2048 (comment)

[Barsnes]

Since support is sparse, I think we should wait before implemeting this

[eirikbacker]

aria-describedby is very well supported, unlike aria-errormessage. Only tip would be to ensure error-message ID is always prepended before help-text-ID in the attribute, so:
✅ aria-describedby="my-error-id my-helptext-id"
❌ aria-describedby="my-helptext-id my-error-id"

[eirikbacker]

Part of #2355

[eirikbacker]

Closing for now as aria-errormessage support is too low