[PR #1295/28727815 backport][stable-4.4] Fix translation in repo selector

[patchback]

This is a backport of PR #1295 as merged into master (2872781).

Issue: AAH-1070

Strings that are marked for translation don't seem to be working if imported from a different file. This is fixed by returning the string in the function and then evoking the function in component. Not sure this is the right way, I couldn't find any mention about this in the Lingui documentation, wdyt @himdel ?

  static REPOSITORYNAMES = {
    published: () => t`Published`,
    'rh-certified': () => t`Red Hat Certified`,
    community: () => t`Community`,
  };

before:

after: