internal/issues: improve test timeout reporting

We occasionally see instances of issues like #107422, where instead of reporting a test name and its output, we just see the name of the package, and no log output in the issue itself. This seems to happen when a test times out.

This could be improved in a few ways:

* The issue reporting could refer to the proper test name as is done when the test fails;
* Test ownership would then be able to be preserved. Since we're not able to find the test owner, these issue end up being routed to Test-Eng.

It would be great if these could be addressed, along with changing the issue title to more accurately reflect that the test timed out.

Jira issue: CRDB-30149

Epic CRDB-36213