feat(test-execute): tx batching for execute remote

[LouisTsai-Csie]

🗒️ Description

Benchmark PR #1885 introduces approximately 15,000 funding transactions. Currently, the execute-remote mode aggregates all transactions and submits them at once, which causes issues since the RPC endpoint cannot handle such workload. Based on current testing, a local node can now reliably handle up to around 1000 transactions.

Solution

• Transactions are now sent in configurable batches (default: 750 transactions per batch).
• Each batch is submitted and confirmed before the next batch is sent.
• Progress logging reports the batch number and transaction ranges.
• A warning is emitted when the batch size exceeds 1,000 transactions (the safe threshold).

🔗 Related Issues or PRs

None

✅ Checklist

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

  uvx tox -e 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 adding an entry to CHANGELOG.md.
• 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.
✅ Project coverage is 86.26%. Comparing base (806fd80) to head (ec8d907).
⚠️ Report is 28 commits behind head on forks/amsterdam.

Additional details and impacted files

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##           forks/amsterdam    #1907   +/-   ##
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  Coverage            86.26%   86.26%           
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  Files                  538      538           
  Lines                34557    34557           
  Branches              3222     3222           
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  Hits                 29809    29809           
  Misses                4161     4161           
  Partials               587      587           

Flag	Coverage Δ
unittests	86.26% <ø> (ø)

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[marioevz]

Some improvement suggestions.

[marioevz]

LGTM, thanks!