Feature request: support for EF Core JSON columns

[sibbl]

Since EF Core 7, it's possible to map JSON columns in e.g. PostgreSQL.

When using InsertOrUpdate, it seems to detect the column as navigation and owned properties.
However, both when inserting and updating, the column stays completely empty.

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
    modelBuilder.Entity<Author>().OwnsOne(
        author => author.Contact, ownedNavigationBuilder =>
        {
            ownedNavigationBuilder.ToJson();
            ownedNavigationBuilder.OwnsOne(contactDetails => contactDetails.Address);
        });
}

This is some sample code for such columns, as you can also see in the EF Core docs about the ToJson feature: https://learn.microsoft.com/en-us/ef/core/what-is-new/ef-core-7.0/whatsnew#json-columns

Are there any ideas to support it?