[Feature request]: Translucent background for sbb-dialog

[sandrooco]

Preflight Checklist

• [X] I have read the Contributing Guidelines for this project.
• [X] I agree to follow the Code of Conduct that this project adheres to.
• [X] I have searched the issue tracker for an issue that matches the one I want to file, without success.

Request type

Request for enhancement of a component

It affects the following packages

Components

Functionality

The current implementation of the sbb-dialog component only has the white background.

The design also includes a halfways translucent variant (via the default-background boolean if I understand it correctly). We would like to have this implemented in the lyne-elements component as well for the following use case:

Thanks in advance for your feedback!

Link to design proposal file

https://www.figma.com/design/9r6xSfNmEfCFxl1yFYedrj/Lyne-Components?node-id=30235-579941&t=5CzZAuYRXpLcSWyt-4