changefeedccl: support range streaks in planning

If the changefeed dist planner uses the bulk oracle for replica selection, it would be useful to also add support for [streaks](https://github.com/cockroachdb/cockroach/pull/120633) (using the same replica for adjacent ranges). To be useful for changefeeds, we would need to add support for streaks when there is a locality filter in place. We should also perform an evaluation to determine default parameter values for streak length thresholds.

Jira issue: CRDB-36857