PixTwins CLI: login fix on current Chrome and Edge

Fixes a regression where signing in to the `pixtwins` command-line tool would silently fail on the latest Chrome and Edge. Run `npm install -g pixtwins@latest` to pick up the fix; existing sessions keep working.

• ›Browser-based `pixtwins login` now completes on Chrome 117+ and current Edge
• ›No action required if you only use the web app
• ›CLI updates: `npm install -g pixtwins@latest`