Add an ART test for qball digitization
Adding a test to monitor qball digitization output to confirm that the issues seen in qball digitization in 21.0 (ATLASSIM-4225) do not appear in other branches.
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Adding a test to monitor qball digitization output to confirm that the issues seen in qball digitization in 21.0 (ATLASSIM-4225) do not appear in other branches.