[Bug]: Copy Link invalid on account registration

[bigntallmike]

Describe the bug

When registering a new account, after entering the server name, a browser is popped up. If it is the wrong browser, and the user wishes to copy and paste the blue-highlighted link into a different session, 'manual_auth' is what gets copied into the clipboard, instead of a valid URI to use for manual registration with a non-default browser session.

Steps To Reproduce

Open new account window
Enter a server url and hit Next
Close the opened browser
Right-click "try manual authorization" and "Copy Link Address"

Logs and/or Screenshots

No response

Instance Backend

Mastodon

Operating System

Fedora Linux 41 (Xfce)

Package

Flatpak

Troubleshooting information

No response

Additional Context

I run multiple browser instances for work, personal and experimentation and my default browser is never the one with my saved passwords for security reasons.