test: Timing of Nakamoto miner block production

[jbencin]

Description

This PR changes the default value for nakamoto_attempt_time_ms to 20 seconds and adds an integration test, test_nakamoto_attempt_time, to check that this value works as expected. Specifically, it checks the following:

• No blocks are produced if no transactions are submitted
• If there is a small number of transactions, blocks will be produced at the rate of nakamoto_attempt_time_ms
• If there are many transactions in the mempool, where it would take longer than nakamoto_attempt_time_ms to include them all in a single block, blocks will still be produced at the rate of nakamoto_attempt_time_ms

Applicable issues

• Nakamoto Miner[3.0] - Miners should produce frequent and smaller blocks across different cost dimensions #4711

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
• New integration test(s) added to bitcoin-tests.yml

[codecov]

Codecov Report

Attention: Patch coverage is 0.38760% with 257 lines in your changes are missing coverage. Please review.

Project coverage is 80.81%. Comparing base (3985c20) to head (4804c17).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #4823       +/-   ##
============================================
+ Coverage    21.46%   80.81%   +59.35%     
============================================
  Files          476      481        +5     
  Lines       343843   345369     +1526     
  Branches         0      323      +323     
============================================
+ Hits         73796   279121   +205325     
+ Misses      270047    66240   -203807     
- Partials         0        8        +8     

Files	Coverage Δ
testnet/stacks-node/src/config.rs	64.58% <100.00%> (+18.99%)	⬆️
...net/stacks-node/src/tests/nakamoto_integrations.rs	6.26% <0.00%> (-0.50%)	⬇️

... and 427 files with indirect coverage changes

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[kantai]

Can you add this test to .github/workflows/bitcoin-tests.yml?

[obycode]

This looks good to me!

[blockstack-devops]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.