experiment(test-benchmark): migrate benchmark to bal-devnet-7

[LouisTsai-Csie]

🗒️ Description

PR against benchmark on bal-devnet-7.

🔗 Related Issues or PRs

N/A.

✅ Checklist

• All: Ran fast static checks to avoid unnecessary CI fails, see also Code Standards and Enabling Pre-commit Checks:

  just static

• All: PR title adheres to the repo standard - it will be used as the squash commit message and should start type(scope):.
• All: Considered updating the online docs in the ./docs/ directory.
• All: Set appropriate labels for the changes (only maintainers can apply labels).
• Tests: Ran mkdocs serve locally and verified the auto-generated docs for new tests in the Test Case Reference are correctly formatted.
• Tests: For PRs implementing a missed test case, update the post-mortem document to add an entry the list.
• Ported Tests: All converted JSON/YML tests from ethereum/tests or tests/static have been assigned @ported_from marker.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (devnets/bal/7@3a951c7). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             devnets/bal/7    #2841   +/-   ##
================================================
  Coverage                 ?   85.59%           
================================================
  Files                    ?      630           
  Lines                    ?    39606           
  Branches                 ?     3937           
================================================
  Hits                     ?    33899           
  Misses                   ?     5083           
  Partials                 ?      624           

Flag	Coverage Δ
unittests	85.59% <ø> (?)

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