Image field settings for default_image value not migrate to media field

Agree with @anybody currently, this is a manual step because it's related to the media field config.
We are planning to start working with a new big release where we gonna add many new help features. To simplify the migration process.
And this issue will be a good extra help feature.

First of all, we need to provide a solution that will allow us to migrate an image from the field settings to the media image entity.
This is necessary because it is possible that such an image will be used only in the settings. And according to the current behavior, it will never be migrated to the media.

I prepared such a solution for that.

Made a separate ticket to fix the migration of the image from default_image setting to the media entity - 🐛 Allow to migrate the default_image of the image field Fixed

To fix this issue we can create a separate drush command for that.
FYI. We have a plan to make a new submodule migrate_file_to_media_ui that will provide a lot of help features to simplify the configuration and migration process.