Merge branch 'brent/refactor-past-epoch-offsets' into draft-pos

* brent/refactor-past-epoch-offsets:
  [ci] wasm checksums update
  changelog: add #1943
  test/PoS/epoched: init PoS params and fix `PastEpochs` type param
  test/eth: init storage with PoS params where needed
  cleaning: remove unused code + improve docstrings
  refactor `Epoched` for past epochs

Author: brentstone

.changelog/unreleased/improvements/1943-refactor-past-epoch-offsets.md

@@ -0,0 +1,3 @@
+- Improve the Epoched data structure's bookkeeping of past
+  epochs, now parameterizable by PoS and governance params.
+  ([\#1943](https://github.com/anoma/namada/pull/1943))

ethereum_bridge/src/protocol/transactions/votes/update.rs

@@ -376,6 +376,7 @@ mod tests {
     #[test]
     fn test_apply_duplicate_votes() -> Result<()> {
         let mut wl_storage = TestWlStorage::default();
+        test_utils::init_default_storage(&mut wl_storage);
 
         let validator = address::testing::established_address_1();
         let already_voted_height = BlockHeight(100);
@@ -411,6 +412,7 @@ mod tests {
     #[test]
     fn test_calculate_already_seen() -> Result<()> {
         let mut wl_storage = TestWlStorage::default();
+        test_utils::init_default_storage(&mut wl_storage);
         let event = default_event();
         let keys = vote_tallies::Keys::from(&event);
         let tally_pre = TallyParams {