HPCC-10758 Display all clusters on activity page

Fixes HPCC-10758

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #5319 from GordonSmith/HPCC-10758

HPCC-10758 Display all clusters on activity page

Reviewed-By: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>