Cardano Updates

# Conflicts:
#	common/src/snapshot/streaming_snapshot.rs
#	tests/integration/spdd.test.ts

- Reverts rewards.rs to main branch version
- Removes redundant registered_stake_addresses parameter from state.rs
- Registration check already handled via two_previous_reward_account_is_registered
- Cleans up total_unpaid_leader_rewards logging that depended on removed field

- Remove Go snapshot from SnapshotsContainer (now only Mark and Set)
- Update epoch assignments: Mark=current epoch, Set=previous epoch (staking)
- Fix leader rewards registration check to use current registration status
  per Shelley spec Figure 48 (isRRegistered = rewardAcnt ∈ dom rewards)
- Add Allegra epoch check (236) to disable shared account bug post-Allegra
- Rename total_unpaid_to_treasury to total_unpaid_leader_rewards for clarity
- Add diagnostic logging for registration checks and rewards calculation

fix: only pass pools retiring in E to accounts state

When the NewEpochState snapshot is taken during reward pulsing (before
completion), member rewards are stored in the Pulser's accumulated
reward answers, not in the reward snapshot's leaders field.

Previously, we were skipping the Pulser entirely and only extracting
leader rewards from snapshot.leaders, which caused delegator accounts
to be missing their rewards. This resulted in withdrawal underflow
errors when users tried to withdraw rewards we hadn't accounted for.

Changes:
- Parse Pulser structure instead of skipping it
- Add RewardAns struct to extract accumulated member rewards
- Combine both leader rewards (from snapshot.leaders) and member
  rewards (from pulser.reward_ans.accum_rewards) in Pulsing variant
- Add logging to show count of leader and member reward accounts

Signed-off-by: William Hankins <[email protected]>

(fix confusing grouping of protocol parameters topic in AC)

refactor: publish StartMithril from custom_indexer when in Mithril mode