System.ServiceModel.ClientBase is incompatible between System.ServiceModel.Primitives 6.0.0 and 8.0.0

**Describe the bug**

I'm upgrading our projects from .NET 7 to .NET 8 and decided to upgrade System.ServiceModel.Primitives as well. Doing so resulted in a bunch of compilation bugs like

Error CS1503 Argument 1: cannot convert from 'string' to 'System.ServiceModel.Description.ServiceEndpoint'

In service clients that were generated with previous versions of tools.

```
public Xxx()
{
}

// broken
public Xxx(string endpointConfigurationName) :
base(endpointConfigurationName)
{
}

// broken
public Xxx(string endpointConfigurationName, string remoteAddress) :
base(endpointConfigurationName, remoteAddress)
{
}

// broken
public Xxx(string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) :
base(endpointConfigurationName, remoteAddress)
{
}

public Xxx(System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) :
base(binding, remoteAddress)
{
}

```

**Expected behavior**

Keep legacy ctor definitions to avoid re-generating service clients between upgrades.