HPCC-9198 Hyperlink + Open Tab fails on FireFox

Fixes HPCC-9198

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #4293 from GordonSmith/HPCC-9198

HPCC-9198 Hyperlink + Open Tab fails on FireFox

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>