When having multiple projects in a session, PR short link directs to wrong link

### Describe the bug

when i have multiple projects in a session, i sometimes will create multiple PRs for each project individually. the PRs only link to the initiall project/repo i started the session in

### Affected version

_No response_

### Steps to reproduce the behavior

1. add multiple repos in your session
2. ask to create PRs for each project
3. the shortened links will only direct to the initial repo/project
- when the short link looks like this `PR #123`

### Expected behavior

I should get redirected to the correct repo/project PR

### Additional context

_No response_

Reproduce the issue by adding multiple repositories to one session and creating a PR for each. Trace the handling of `PR #123` short links and verify that each link resolves to the repository where its PR was created, rather than the session's initial repository.

Written by the indexing model from the issue text.