aac: update epoch list configuration from epoch20

[federico-stacks]

Description

This PR is mainly a wrap-up of what we discussed during our last internal sync. It introduce a very small change concerning the epoch list creation, taking into account epoch 2.X.

Here a sum-up of the points we discussed:

• The epoch list should be configured starting from Epoch 2.0.
• We can safely use a +1 strategy to move between Epoch 2.X, since we plan to refactor the Test Harness so that all test transactions for Epoch 2.X fit within a single block
• The only transactions we need to execute in Epoch 2.X are contract deployments.
• There is no immediate need to make the epoch list “dynamic” (in terms of burn height configuration) as a test input for now. The optional epoch-related parameters already provided by contract_deploy_consensus_test! and contract_call_consensus_test! macros should be sufficient.

If this reasoning is correct, considering the small change introduced in this PR would we prefer to integrate it directly into #6608 instead?
Otherwise, I’m happy to adjust and implement any missing pieces based on your feedback.

Applicable issues

• fixes AAC: Add epoch list support to test input #6567

Additional info (benefits, drawbacks, caveats)

Checklist

• Test coverage for new or modified code paths
• Changelog is updated
• Required documentation changes (e.g., docs/rpc/openapi.yaml and rpc-endpoints.md for v2 endpoints, event-dispatcher.md for new events)
• New clarity functions have corresponding PR in clarity-benchmarking repo

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[codecov]

Codecov Report

❌ Patch coverage is 95.65217% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.67%. Comparing base (a7d73af) to head (a5ae88e).
⚠️ Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
stackslib/src/chainstate/tests/consensus.rs	95.65%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6611      +/-   ##
===========================================
+ Coverage    79.88%   80.67%   +0.78%     
===========================================
  Files          571      571              
  Lines       351586   351590       +4     
===========================================
+ Hits        280856   283634    +2778     
+ Misses       70730    67956    -2774     

Files with missing lines	Coverage Δ
stackslib/src/chainstate/tests/consensus.rs	94.70% <95.65%> (-0.14%)	⬇️

... and 81 files with indirect coverage changes

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