There was a option to view the backend ports and firebase studio related setting, this options isnt visible anymore.
I found solution
step 1- click on the extension
step 2- If you notice you would see a name starting with firebase (see the attached screenshot)
step 4- Suppose your port is running at 3000 then you port url would be like this→
```https://3000-firebase-NAME-OF-YOUR-CODESPACE-1XXXXXXXXX.cluster-isls3qj2gbd5qs4jkjqvhahfv6.cloudworkstations.dev```
