This adds fuzz seeds for the harnesses impacted by the SFL algorithm for cluster linearization (clusterlin_linearize, clusterlin_sfl, txgraph), with around 8 months of CPU time each, though most of that was on an earlier version of https://github.com/bitcoin/bitcoin/pull/34616 than the one that was merged. The final -set_cover_merge=1 was done with master as of right now.
Also, this is with a merge done with -use_value_profile=0; my earlier submissions the past few days were with -use_value_profile=1, which I see is not recommended.