HPCC-11110 Some Lists show "Zero Rows" while loading

Lists based off of GridDetailsWidget will show Zero Rows while loading.

Fixes HPCC-11110

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #5666 from GordonSmith/HPCC-11110

HPCC-11110 Some Lists show "Zero Rows" while loading

Reviewed-By: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>