Log error objects in the default error handler

[Subharup-31]

Problem

The default Express final-handler logger currently logs err.stack || err.toString(). That stringifies the error too early and can hide structured error details such as Error.cause or additional properties provided by libraries.

Root cause

logerror extracts the stack string before passing the error to console.error, so Node's object/error formatter cannot include nested details.

Fix

Pass the error object directly to console.error. This preserves existing stack output while allowing runtimes to include richer error object information.

Testing

• Added a regression test that verifies the default logger receives the original error object.
• Ran git diff --check successfully.

Fixes #6462

[krzysdz]

Duplicate of #6464