4ea03f3f4et al arranged to filter out row counts in parallel plans, because those are dependent on the number of workers actually obtained. Somehow I missed that the 'Rows Removed by Filter' counts can also vary, so fix that too. Per buildfarm. This seems worth a last-minute patch because unreliable regression tests are a serious pain in the rear for packagers. Like the previous patch, back-patch to v11 where this test was introduced.