chore: change eloq_store_max_write_batch_pages default to 32

[thweetkomputer]

Here are some reminders before you submit the pull request

• Add tests for the change
• Document changes
• Reference the link of issue using fixes eloqdb/tx_service#issue_id
• Reference the link of RFC if exists
• Pass ./mtr --suite=mono_main,mono_multi,mono_basic

Summary by CodeRabbit

• Chores
  • Updated internal submodule reference — maintenance work with no functional changes.
  • Adjusted default configuration for write batching, reducing the default maximum write-batch pages; may affect batching behavior and performance characteristics.

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[coderabbitai]

Walkthrough

Updated the eloqstore submodule pointer and reduced the default value of eloq_store_max_write_batch_pages from 256 to 32; no public API signatures were changed.

Changes

Cohort / File(s)	Summary
Submodule Pointer Update store_handler/eloq_data_store_service/eloqstore	Advanced submodule reference from commit ca395ee54d6f... to a93af59a5fdb...; no code changes in this repository.
Config Default Change store_handler/eloq_data_store_service/eloq_store_config.cpp	Changed default for DEFINE_uint32(eloq_store_max_write_batch_pages) from 256 to 32; no signature or control-flow changes.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• chore: update submodule eloqstore and add new parameters to eloq_store_config #370: Modifies EloqStore configuration flags and is related to the config default change.
• update eloqstore subm #371: Updates the eloqstore submodule pointer similarly.
• chore: bump eloqstore submodule to bafb377 #369: Also updates the eloqstore submodule pointer.

Suggested reviewers

• lzxddz
• liunyl

Poem

🐰 I hopped along the file-lined hill,
A pointer nudged, a number shrank until,
The store stays steady, defaults now light —
I nibble code by moonlit byte. 🥕✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description is incomplete; it only contains the unchecked template checklist with no actual description of changes, motivation, or context for why the default value was changed.	Add a description explaining the purpose of changing the default value from 256 to 32, any performance or resource implications, and complete the checklist items by adding issue references, tests, and documentation as applicable.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'chore: change eloq_store_max_write_batch_pages default to 32' clearly and specifically describes the main change in the changeset—updating a configuration flag's default value.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix-mapping-snapshot-lifetime-zc

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[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@store_handler/eloq_data_store_service/eloqstore`:
- Line 1: Update the PR description to include the upstream commit summary:
mention commit 0251a3d5891919c4d19f78b4f052411fc900a63e, state that it fixes
"MappingSnapshot UAF after shard stop", and note that it adds comprehensive test
coverage across multiple components (include a short list of affected areas if
known). Keep the summary brief and add the commit hash so reviewers can
reference the upstream change directly.