fix: FillDataTableAsync must not use ConfigureAwait(false)

DataTable/DataGridView mutations must happen on the UI thread.
ConfigureAwait(false) was scheduling FlushBatch on a thread-pool
thread, so the DataGridView never received the bound changes.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: vkuttyp

src/SqlDotnetty.Core/ISqlDatabase.cs

@@ -191,7 +191,7 @@ public static async Task FillDataTableAsync(
     {
         var batch = new List<SqlRow>(batchSize);
 
-        await foreach (var row in rows.WithCancellation(ct).ConfigureAwait(false))
+        await foreach (var row in rows.WithCancellation(ct))
         {
             // Ensure columns exist from the very first row
             if (table.Columns.Count == 0)