sf org open not opening orgs in browser

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> - You're using the latest version of Salesforce CLI. - yes, updated today
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### Summary

Running sf org open, get the usual messages but it NEVER opens the org in my browser

### Steps To Reproduce
I'm on a Windows machine using VSCode (recently upgraded).
I am on cli version @salesforce/cli/2.150.6 win32-x64 node-v24.19.0
I have my default org set to a sandbox
I type at the Terminal: sf org open
I get the following back in the terminal:
Opening org 00DO500000XXXXXXXX as user lkane@XXXXX.com.lkane
Waiting to resolve the Lightning Experience-enabled custom domain...... done
But the browser window never opens...

There are other developers on my team reporting the same issue (and have been since v2.149 (I upgraded today from v2.148)

I can't provide a repo you can access because we're only allowed to create private ones...

> **IMPORTANT**
> Provide a repository that's configured to reproduce the issue. If you are unable to provide a repo, please explain why not. The more info we have from the start, the faster we can resolve your issue.
> We may close your issue if you don't include proper instructions.
>
> - Generate a project with `sf project generate` or fork [dreamhouse-lwc](https://github.com/trailheadapps/dreamhouse-lwc).
> - Provide detailed step-by-step instructions on how to reproduce the issue.

> [!TIP]
> use `sf doctor --create-issue` to automatically fill the required information

### Expected result

It should have opened the org in a browser

### Actual result

It didn't do anything - no new browser window opened at all on my machine

### Additional information
Work around: using sf org open --url-only and the URL is working to open the org

I also tried sf org open --browser chrome but that didn't do anything either

### System Information

in vscode so Terminal but powershell

```json
{
"architecture": "win32-x64",
"cliVersion": "@salesforce/cli/2.150.6",
"nodeVersion": "node-v24.19.0",
"osVersion": "Windows_NT 10.0.26200",
"rootPath": "C:\\Users\\lkane\\AppData\\Local\\sf\\client\\2.150.6-c049970",
"shell": "cmd.exe",
"pluginVersions": [
"@oclif/plugin-autocomplete 3.3.0 (core)",
"@oclif/plugin-commands 4.2.0 (core)",
"@oclif/plugin-help 6.3.0 (core)",
"@oclif/plugin-not-found 3.3.0 (core)",
"@oclif/plugin-plugins 5.5.1 (core)",
"@oclif/plugin-search 1.3.0 (core)",
"@oclif/plugin-update 4.8.0 (core)",
"@oclif/plugin-version 2.3.0 (core)",
"@oclif/plugin-warn-if-update-available 3.2.0 (core)",
"@oclif/plugin-which 3.3.0 (core)",
"@salesforce/cli 2.150.6 (core)",
"agent 2.0.5 (core)",
"apex 4.1.1 (core)",
"api 2.0.9 (core)",
"auth 5.0.6 (core)",
"code-analyzer 5.16.0 (user)",
"data 5.1.7 (core)",
"deploy-retrieve 4.1.2 (core)",
"info 4.0.9 (core)",
"limits 4.0.4 (core)",
"marketplace 2.0.5 (core)",
"org 6.0.11 (core)",
"packaging 3.0.6 (core)",
"schema 4.0.6 (core)",
"settings 3.0.6 (core)",
"sobject 2.0.5 (core)",
"telemetry 4.0.6 (core)",
"templates 57.0.11 (core)",
"trust 4.0.10 (core)",
"user 5.0.2 (core)"
]
}
```

Start by reproducing `sf org open` on Windows with PowerShell or the VSCode terminal, using the reported CLI version and default sandbox org. Compare normal browser launching with `--url-only` and `--browser chrome`, then trace the `sf org open` command's browser-opening entry point. Done means the org opens in the selected browser while the existing URL-only workaround continues to work.

Written by the indexing model from the issue text.