Connection flow is broken when more integrations are needed to be connected

[sergeibbb]

Description

This PR fixes connection flow when more integrations are needed to be connected.
The solution is based on this discussion: https://gitkraken-hq.slack.com/archives/C06AVHLRS80/p1757598749281269?thread_ts=1757597475.779229

Steps to reproduce

1. Connect GitHub. Do not connect Bitbucket.
2. Open Launchpad.
3. Imagine you want to connect Bitbucket
4. Click "Connect additional integrations"
   
5. Follow the flow.

Actual result

You jump to a login page without ability to select a new integration to connect

Expected result

You open a page where you can select an addition integration to connect

Checklist

• I have followed the guidelines in the Contributing document
• My changes follow the coding style of this project
• My changes build without any errors or warnings
• My changes have been formatted and linted
• My changes include any required corresponding changes to the documentation (including CHANGELOG.md and README.md)
• My changes have been rebased and squashed to the minimal number (typically 1) of relevant commits
• My changes have a descriptive commit message with a short title, including a Fixes $XXX - or Closes #XXX - prefix to auto-close the issue that your PR addresses

[d13]

Looks good to me