Default enable use_traversal_ids_for_ancestor_scopes feature flag

What does this MR do and why?

Default enable use_traversal_ids_for_ancestor_scopes feature flag. This FF has been globally enabled for many months.

/chatops run feature get use_traversal_ids_for_ancestor_scopes

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MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.

Related to #340159 (closed)