[PM-25138] Reduce db locking when creating default collections (#6308)

* Use single method for default collection creation

* Use GenerateComb to create sequential guids

* Pre-sort data for SqlBulkCopy

* Add SqlBulkCopy options per dbops recommendations

src/Infrastructure.Dapper/Utilities/SqlGuidHelpers.cs

@@ -0,0 +1,26 @@
+using System.Data.SqlTypes;
+
+namespace Bit.Infrastructure.Dapper.Utilities;
+
+public static class SqlGuidHelpers
+{
+    /// <summary>
+    /// Sorts the source IEnumerable by the specified Guid property using the <see cref="SqlGuid"/> comparison logic.
+    /// This is required because MSSQL server compares (and therefore sorts) Guids differently to C#.
+    /// Ref: https://learn.microsoft.com/en-us/sql/connect/ado-net/sql/compare-guid-uniqueidentifier-values
+    /// </summary>
+    public static IOrderedEnumerable<T> OrderBySqlGuid<T>(
+        this IEnumerable<T> source,
+        Func<T, Guid> keySelector)
+    {
+        return source.OrderBy(x => new SqlGuid(keySelector(x)));
+    }
+
+    /// <inheritdoc cref="OrderBySqlGuid"/>
+    public static IOrderedEnumerable<T> ThenBySqlGuid<T>(
+        this IOrderedEnumerable<T> source,
+        Func<T, Guid> keySelector)
+    {
+        return source.ThenBy(x => new SqlGuid(keySelector(x)));
+    }
+}