Auto-open parent components on drop

[ErlingHauan]

Description

When a new parent component is dropped into the workspace, it remains in a closed state. This requires users to manually open these components before they can insert child components.

Suggestion

It would enhance user experience if these parent components could open automatically upon being dropped into the workspace. This automatic expansion would allow users to immediately begin inserting child components without additional clicks.

Components Affected

This feature request applies to the following components:

• Groups
• Button Groups
• Repeating Groups
• Accordions
• Accordion Groups

Steps to Reproduce

1. Drag and drop any of the listed components into the workspace.
2. Observe that the component remains closed and requires manual interaction to open.

Video demonstration

https://github.com/Altinn/altinn-studio/assets/148075168/eff440b6-4d2f-47c3-a320-388d9d824ad1