adjust the implementations of Next Recommended Action for Tabell for underskjema

[JamalAlabdullah]

Description

We need to change a little bit in the user story regarding creating a new subform, here is the changes we need after feedback from UX:
https://github.com/orgs/Altinn/projects/36/views/3?filterQuery=sprint%3A%40current+label%3A%22team%2Fstudio-domain2%22&pane=issue&itemId=84996085&issue=Altinn%7Caltinn-studio%7C13928

Additional Information

No response

[lassopicasso]

Following discussions with @Annikenkbrathen, the tasks for this issue are:

• Remove buttons below the selector. ✅
• In the next recommended action (displayed when the "Tabell for underskjema" component is initially added), display the "Create new subform" link below the selector. ✅
• When clicking "Create new subform," replace the selector and link with a new card. ✅
• The new card should include Save and Close buttons (if closed, return to the selector to allow selecting an existing subform). ✅
• After creating a new subform, stay in the current configuration view instead of redirecting to the new subform ✅
• Replace "Det finnes ingen sidegrupper i løsningen som kan brukes som et underskjema" with the next recommended action shown in Anniken's comment in feat/add data model binding for subfrom #13928. ✅
• Rename the "til utforming"-button to "Utform underskjemaet" ✅

[JamalAlabdullah]

tested ok in dev 👍