test(issues): add trace context to span evidence fixture

[scttcper]

silences a loud warning that prints out a bunch of times

    console.warn
      Pathnames cannot have embedded double slashes - normalizing /organizations/org-slug/explore/traces/trace// -> /organizations/org-slug/explore/traces/trace/

      19 |   }
      20 |
    > 21 |   originalConsoleWarn(message, ...args);
         |   ^
      22 | };
      23 |

[malwilley]

🙏