Windows running edgedb on command prompt returns a ClientNoCredentialsError

- EdgeDB Version: 2.6+ba1661b
- OS Version: Windows 10

Steps to Reproduce:

Run `edgedb` command on command prompt

`edgedb error: ClientNoCredentialsError: project is not initialized and no connection options are specified
Hint: Run `edgedb project init` or use any of `-H`, `-P`, `-I` arguments to specify connection parameters. See `--help` for details`

On powershell it works fine the command `edgedb` outputs:

Connecting to an EdgeDB instance at localhost:10700...
EdgeDB 2.6+ba1661b (repl 2.1.0+e136de4)
Type \help for help, \quit to quit.
edgedb>

Start by reproducing the `edgedb` entry point in Windows Command Prompt and PowerShell, comparing how each environment supplies connection or credential options. Trace the CLI initialization path and add coverage for the differing behavior; done means invoking `edgedb` without arguments behaves consistently in both shells.

Written by the indexing model from the issue text.