SQL Server: cannot batch-insert entities with generated values only that have a computed column

[roji]

If an entity type has only generated values, trying to insert a number of entities which exceeds Min Batch Size throws:

fail: 2/25/2022 13:51:03.366 CoreEventId.SaveChangesFailed[10000] (Microsoft.EntityFrameworkCore.Update) 
      An exception occurred in the database while saving changes for context type 'BlogContext'.
      Microsoft.EntityFrameworkCore.DbUpdateException: An error occurred while saving the entity changes. See the inner exception for details.
       ---> Microsoft.Data.SqlClient.SqlException (0x80131904): The column "GeneratedOnUpdate" cannot be modified because it is either a computed column or is the result of a UNION operator.

The SQL:

SET NOCOUNT ON;

DECLARE @inserted0 TABLE ([Id] int);

INSERT INTO [WithAllDatabaseGenerated] ([GeneratedOnUpdate])
OUTPUT INSERTED.[Id]
INTO @inserted0
VALUES (DEFAULT),
(DEFAULT),
(DEFAULT),
(DEFAULT);

SELECT [t].[Id], [t].[GeneratedOnUpdate] FROM [WithAllDatabaseGenerated] t
INNER JOIN @inserted0 i ON ([t].[Id] = [i].[Id]);

Repro

await using var ctx = new BlogContext();
await ctx.Database.EnsureDeletedAsync();
await ctx.Database.EnsureCreatedAsync();

for (var i = 0; i < 3; i++)
{
    ctx.WithAllDatabaseGenerated.Add(new());
}

await ctx.SaveChangesAsync();

public class BlogContext : DbContext
{
    public DbSet<WithAllDatabaseGenerated> WithAllDatabaseGenerated { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        => optionsBuilder
            .UseSqlServer(@"Server=localhost;Database=test;User=SA;Password=Abcd5678;Connect Timeout=60;ConnectRetryCount=0")
            .LogTo(Console.WriteLine, LogLevel.Information)
            .EnableSensitiveDataLogging();

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<WithAllDatabaseGenerated>()
            .Property(w => w.GeneratedOnUpdate)
            .HasComputedColumnSql("80");
    }
}

public class WithAllDatabaseGenerated
{
    public int Id { get; set; }
    public int GeneratedOnUpdate { get; }
}

/cc @AndriySvyryd, discovered while working on #27372.