Add dynamic content fallback

[wpsumo]

Describe the feature you'd like to see included in Oxygen.
Possibility to add fallback value. When using dynamic content and templates it is very good to see how it will look once designing. And once updating content to see which fields is missing data.

Preview page in templating requires to insert all fields data.

Minor thing but would be nice to see n the future. Not as critical as other features.

What are the use cases for this feature?
When fields is empty or missed to fill out or fail to load display fallback value (text/image etc)

Examples of this feature or functionality.
https://docs.elementor.com/article/310-dynamic-content