Default enable use_traversal_ids feature flag

What does this MR do and why?

Most linear queries are gated behind a specific feature flag for that query as well as a master feature flag (use_traversal_ids) for all linear queries. This commit will default enable the linear query use_traversal_ids master feature flag.

The use_traversal_ids feature flag has been globally enabled on .com for a long time.

MR acceptance checklist

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