Allow proper display of actions in index when displayed as Form

[yalit]

This is supporting the #6893 and completing the #6831 to enable proper display in entity line for the "displayed as Forms" actions.

Before

Screenshot from a personal project with a "Publish" action being displayed as form...

After

Screenshot taken from a project used for the dev of this update with a "Test action" action being displayed as a form. with the dropdown action being a form button and not a link anchor

[yalit]

@javiereguiluz I missed to check the other PRs :( and it seems quite close to the #6833.

the addition here is a complete handling of the display also for inline displayed actions