Can't choose existing build when creating testrun via webUI

[Michal-Kochman]

Description of problem

Using the docker image on our server (kiwi.localdomain). When creating the new tesrtun vie the web GUI (https://kiwi.localdomain/runs/new/) we can fill all the required fields except the "Build" field. The drop down menu only shows one possible build (for one product), or no build at all (for other products). When new build is created it is shown in the drop down, but we can not save the test run (error saying the value is not valid is shown).

tried assigning existing build to new testrun
tried assignign existing build editing testrun
tried creating new build for both cases above
None worked, only build with ID1 seems to be available. I expect the other ID's for product "W" to be available.

Version or commit hash (if applicable)

14.2.

Steps to Reproduce

1. create several builds
2. delete build with ID2 from database

Actual results

I can only select build ID1

Expected results

I can select any existing build

Additional info (Python traceback, logs, etc.)