Builder: missing builderFormValidityChange event on delete component

[rzorzorzo]

Describe the bug
Builder: when removing an invalid component, so that the form becomes valid, the lib should emit a builderFormValidityChange event

Version/Branch
5.0.0-rc.76

To Reproduce
Steps to reproduce the behavior:

1. open empty form in builder
2. Add Input component
3. Add another Input component with same api key
4. Error is show and builderFormValidityChange event is emitted
5. remove the second component
6. Error is no longer shown, but no builderFormValidityChange event is emitted

Note: The arg of the event is not a boolean, as expected, but the form, from which it is not possible to get the validity state

Expected behavior
builderFormValidityChange event is emitted

workaround:
to check validity: .querySelector("[aria-invalid=true]")
check validity on removeComponent event

[lane-formio]

Is this still happening on rc.88?