HPCC-10542 Support dependent actions in the same graph

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
Merge pull request #5218 from ghalliday/issue10542

HPCC-10542 Support dependent actions in the same graph

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>