The EF Core 7.0 JSON support isn't currently implemented

[dodu2014]

Steps to reproduce

run dotnet ef migrations add xxx

The issue

The exception 'The EF Core 7.0 JSON support isn't currently implemented. Instead, there is support for a more extensive implementation. See https://github.com/PomeloFoundation/Pomelo.EntityFrameworkCore.MySql for more information on how to map JSON.' was thrown while attempting to create an instance. For the different patterns supported at design time, see https://go.microsoft.com/fwlink/?linkid=851728

Further technical details

MySQL version: 8.0.36
Operating system: windows 11
Pomelo.EntityFrameworkCore.MySql version: 9.0.0-preview.2.efcore.9.0.0
Microsoft.AspNetCore.App version: 9.0