print errno message for too many open files error

[ddavila0]

Description

Print a significant error message when "too many open files" limit is reached

Testing

No tests needed, not a new feature

Documentation

I don't think so

[ddavila0]

this has to do with the issue discussed here: https://github.com/microsoft/msquic/issues/4409

[nibanks]

We don't want to add printf statements to the core code.

[nibanks]

Please either convert this to a trace event or simply update the documentation on how to diagnose this.