HPCC-11309 - Ensure IDFUHelper cooperate with transactions

Ensure they release their locks before committing transaction.
Also move remove super file operation into transaction.

Signed-off-by: Jake Smith <jake.smith@lexisnexis.com>
Merge pull request #5771 from jakesmith/hpcc-11309

HPCC-11309 - Ensure IDFUHelper cooperate with transactions

Reviewed-By: Gavin Halliday <gavin.halliday@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>