Reintroduce the ability to open tests results in the same window from /testResults page

### What feature do you want to see added?

I often want to open a specific test result in the same window from the test results page.
Since #727 it is not possible to do that.

The change added a link but it always opens in a new window. This is normally bad UX as users can open things in a new window if they desire by using standard platform idioms (ctrl+clink, middle button etc).
However if the target is set to new the user can not override this.

### Upstream changes

#727

### Are you interested in contributing this feature?

_No response_

Start at the /testResults page and review the link behavior introduced by #727. Change the test-result link so it opens in the same window by default, while preserving standard user options for opening it in a new window.

Written by the indexing model from the issue text.