HPCC-11219 Bulk workunit delete leaves checkbox checked

Fixes HPCC-11219

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #5720 from GordonSmith/HPCC-11219

HPCC-11219 Bulk workunit delete leaves checkbox checked

Reviewed-By: Kevin Wang <kevin.wang@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>