HPCC-11663 Store can get stuck "loading..."

Only happens if service returns null rather than an empty array.

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #6181 from GordonSmith/HPCC-11663_1

HPCC-11663 Store can get stuck "loading..."

Reviewed-By: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>