Bug: Button element stays the same in editor when link added/removed

[frzsombor]

Description

Button element (SPAN/A) stays the same in editor when link added/removed

Steps to reproduce

1. Create a button in block editor
2. Block is created as a SPAN elem by default
3. Add a link to the button

or

1. Open block editor
2. Edit a button that has a link (A tag)
3. Remove the link from the button

Actual behavior

The actual dom elem of the button stays the same, even if we add/remove a link. After saving and reloading (the block editor or the live page) the element changes (from SPAN to A or vice versa), but not "live" in the editor, which makes it confusing when we know we have classes targeting buttons specifically with A or SPAN tags.

Expected behavior

Upon adding/removing a link on a button, it should immediatelly shange to the corresponding dom elem in the block editor, so we see the correct styling.

Additional info

When switching the "Button Type" in advanced (between Link and ) the element gets replaced correctly. This behaviour should be copied when adding/removing links.