feat: show number of errors for inline tab

[MichalNemec]

Do you have any examples?

Is it a third party application feature request?

no

Describe your feature request

when there is validation error, have badge showing there the error is. Right now there is just a message "Please correct the errors below" But it does not say/show where. It would be very handy to have red circle badge on the tab itself where the error is to fix it.

[demoh2019]

+1

[lombord]

Is there any update on that?

[lukasvinclav]

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