FMA: `proxyd` transaction filtering

[tynes]

This FMA represents completing the full FMA process for the proxyd transaction filtering

See ethereum-optimism/optimism#14903

[axelKingsley]

Draft: https://github.com/ethereum-optimism/design-docs/pull/249/files#diff-2af196ef05c55c534283bd66a9d21b8c8d162b0dccb09e5b76e38f3b68fd8662

[mds1]

Is this tracking issue a duplicate of #239 ? they link to the same FMA

[axelKingsley]

Yes, the tickets were cut and assigned separately, but then i just made one FMA across them. We can close this one and just focus the other one.