TrigAnalysisTest: fix UFOInfoAlgCSSK crash in AOD->DAOD
Hello,
This MR is fixing a crash affecting trigger ART tests using a AOD->DAOD step. Unfortunately, a change introduced in jet reconstruction broke AOD->DAOD workflows not using the component accumulator (ATLASRECTS-7119), and requires a postExec to workaround the problem. I am applying the recipe kindly provided in the JIRA ticket. I only fixed 1 test, however we have others that also run a AOD->DAOD step, but these currently fail due to upstream crashes. Once the upstream problem is fixed, the UFOInfoAlgCSSK crash may appear, and we'll then add the postExec.
Cheers, Bertrand