Support Extra Field Version-3

This truly is blocking Drupal 11 compatibility (because only Extra Field 3.x is D11 compatible) so i think this is major.

A workaround, in the require section of your project root composer.json claim that Extra Field 3 is actually version 2:

    "require": {
        "drupal/extra_field": "3.0.x-dev@dev as 2.3",

And given that the above workaround has been working for us on a site for a long time, allowing Extra Field 3 in Extra Field Configuration's composer.json like this should be all that is needed.