FFM-11657 Sort serving rules and flag rules in cache code

[erdirowlands]

What

• Move the group AND/OR rules, and Flag Rules outside of the critical evaluation path into the point we save them to the cache.

Why

Avoid the cost of sorting multiple times during evaluations when it is unnecessary, which can add evaluation latency.

Testing

TestGrid - both old style and new style scenarios pass.

[akiraqb]

LGTM