HPCC-11653 Merge roxie endpoint results for control:queries for release 4.2.6

Also update WsWorkunits::WUQuerysetDetails to reflect change.

This branch is a rebase for 4.2.6. This change has already been merged into 5.0 with pull request:
hpcc-systems#5658

Signed-off-by: Anthony Fishbeck <anthony.fishbeck@lexisnexis.com>