<PackageReference Include="Microsoft.Data.SqlClient" Version="7.1.0-preview3.26238.4" />

Microsoft.Data.SqlClient.ConnectionPool.NoOpAcquiredLease

A no-op RateLimitLease that is always acquired and performs no work on dispose. Used as a stand-in when no rate limiter is configured so the open path can treat the lease as unconditional. Stateless and safe to share across all callers; access the singleton via Instance.
namespace Microsoft.Data.SqlClient.ConnectionPool { internal sealed class NoOpAcquiredLease : RateLimitLease { public static readonly NoOpAcquiredLease Instance; } }