Merge branch 'brent/fix-init-validator-tendermint-mode' of https://gi…

…thub.com/anoma/namada into brent/fix-init-validator-tendermint-mode

* 'brent/fix-init-validator-tendermint-mode' of https://github.com/anoma/namada:
  changelog: add #1549
  test/e2e/pos_init_validator: ensure that node after init-validator works
  fix: remove invalid condition around prepare-proposal
  update TendermintMode in Namada config for new post-genesis validator
  changelog: add #1553
  [ci] wasm checksums update
  test/pos: check is_validator for a new validator
  pos: fix is_validator to be epoch agnostic
  Namada 0.17.1
  changelog: add #1534
  [ci] wasm checksums update
  test/storage: fill-in block header for commit if missing
  test/e2e/ledger/genesis_validators: validator wait for tx block height
  rpc: use the new shell last_block query to find last committed block
  core/storage: impl Display for BlockHash
  core/time: impl Display for DateTimeUtc
  shared/queries/shell: expose the last committed block from storage
  core/storage: Store last committed block's hash and time with its height