Add new method for parameterless Listen() (dotnet/corefx#42262)

Add new method for parameterless Listen() (dotnet/corefx#42262)

* Add new method for parameterless Listen()

This adds a parameterless overload for Listen(int) which passes in int.MaxValue as the default value. I changed existing tests that were explicitly using int.MaxValue or a random value to use the new overload with no parameter.

* Update src/System.Net.Sockets/src/System/Net/Sockets/Socket.cs

Co-Authored-By: Stephen Toub <stoub@microsoft.com>
Commit migrated from https://github.com/dotnet/corefx/commit/8bdfd53bd23f7242a96c72f152bed5e2adf684fc