HPCC-12175 Index normalize may ignore choosen limit on Roxie

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-12175 Index normalize may ignore choosen limit on Roxie

Improved code after code review.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #6414 from richardkchapman/index-normalize-limit

HPCC-12175 Index normalize may ignore choosen limit on Roxie

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>