[csharp] sql injection detection not working?

We are evaluating GHAS for our app sec pipeline and we can't seem to get it to flag for sql injection.

```csharp
public void SubscribeTo(int systemKeyId, ThirdPartyType thirdParty, string userReference)
{

#pragma warning disable SYSLIB0021
#pragma warning disable SCS0010
// this is detected
System.Security.Cryptography.SymmetricAlgorithm serviceProvider = new System.Security.Cryptography.DESCryptoServiceProvider();
#pragma warning restore SCS0010
#pragma warning restore SYSLIB0021

#pragma warning disable CS0618 // Type or member is obsolete
// none of these detected
var adapterA = new SqlCommand("SELECT ITEM,PRICE FROM PRODUCT WHERE ITEM_CATEGORY='" + userReference + "' ORDER BY PRICE");
var adapterB = new SqlCommand("SELECT ITEM,PRICE FROM PRODUCT WHERE ITEM_CATEGORY='" + userReference + "' ORDER BY PRICE", null);
var adapterC = new SqlCommand("SELECT ITEM,PRICE FROM PRODUCT WHERE ITEM_CATEGORY='" + userReference + "' ORDER BY PRICE", null, null);
#pragma warning restore CS0618 // Type or member is obsolete

using (var session = _pgDatabase.OpenSession())
using (var transaction = session.BeginTransaction(System.Data.IsolationLevel.ReadCommitted))
{
// this is not detected
session.CreateSQLQuery(@$"insert into thirdpartymonitor.subscription(user_reference, thirdparty_id, system_id) VALUES ('{userReference}', {thirdParty}, {systemKeyId}) ON CONFLICT DO NOTHING;")
.ExecuteUpdate();

transaction.Commit();
}
}
```

I would expect the `SqlCommand` to be detected as per https://github.com/github/codeql/blob/fe18e0e414daa3a5bf5b27ae6690e8c485850d44/csharp/ql/lib/ext/System.Data.SqlClient.model.yml#L6

But I'm not sure if `CreateSQLQuery` is detected as I don't see a sink for nhibernate.CreateSQLQuery?

I've attached my workflow file too.

[codeql.yml](https://github.com/user-attachments/files/24065746/codeql.yml)

Cheers,
Indy