Improve codecov on `StateLookupRobustAddress`

[LesnyRumcajs]

Summary

Older states are not covered, see https://app.codecov.io/github/ChainSafe/forest/blob/main/src%2Frpc%2Fmethods%2Fstate.rs.

Use archival snapshots to generate RPC snap tests for this.

Completion Criteria

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