SMO.Server.KillDatabase() throws when targeting a SQL Azure Managed Instance server

Repro:

            var sc3 = new SqlConnection(@"Data Source=<your MI server>;User ID=sa; Password=...");
            var srvconn3 = new ServerConnection(sc3);
            var server3 = new SMO.Server(srvconn3);
            var db3 = new SMO.Database(server3, "MatteoT_1");
            db3.Create();
            server3.KillDatabase(db3.Name);

Result
Runtime exception: This ALTER DATABASE statement is not supported. Correct the syntax and execute the statement again.

It looks like we are tripping over the attempt to put the DB in single user mode:

ALTER DATABASE [MatteoT_1] SET SINGLE_USER WITH ROLLBACK IMMEDIATE

Start at SMO.Server.KillDatabase() and reproduce the failure against a SQL Azure Managed Instance using the supplied example. Trace the generated ALTER DATABASE statement, especially the SINGLE_USER clause; done means KillDatabase completes for the MI target without the unsupported-syntax exception.