`error_output_paths` configuration doesn't work as expected

[codeboten]

trafficstars

Component(s)

service

What happened?

Describe the bug The error_output_paths configuration doesn't behave the way I expected it to. I expected that setting this value in service::telemetry::logs would send all errors to the configured path. But as per the zap documentation:

// ErrorOutputPaths is a list of URLs to write internal logger errors to.
// The default is standard error.
//
// Note that this setting only affects internal errors; for sample code that
// sends error-level logs to a different location from info- and debug-level
// logs, see the package-level AdvancedConfiguration example.

This was identified as part of the work in https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/40491#issuecomment-2949691001

Steps to reproduce

Run a collector w/ the configuration:

service:
  telemetry:
    logs:
      output_paths: ["stdout"]
      error_output_paths: ["stderr"]

What did you expect to see? Error logs going to stderr, and other logs going to stdout

What did you see instead? All my collector logs going to stdout

Collector version

latest

Environment information

Environment

OS: (e.g., "Ubuntu 20.04") Compiler(if manually compiled): (e.g., "go 14.2")

Additional context

No response