HPCC-11176 HexView Blanks Display After Temp WU is Deleted

Fixes HPCC-11176

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #5660 from GordonSmith/HPCC-11176

HPCC-11176 HexView Blanks Display After Temp WU is Deleted

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>