Rename methods of CommitHandler

[brfrn169]

Description

This PR renames some methods of CommitHandler to align with the Consensus Commit documentation.

Related issues and/or PRs

N/A

Changes made

• Renamed some methods of CommitHandler.

Checklist

The following is a best-effort checklist. If any items in this checklist are not applicable to this PR or are dependent on other, unmerged PRs, please still mark the checkboxes after you have read and understood each item.

• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes.
• I have considered whether similar issues could occur in other products, components, or modules if this PR is for bug fixes.
• Any remaining open issues linked to this PR are documented and up-to-date (Jira, GitHub, etc.).
• Tests (unit, integration, etc.) have been added for the changes.
• My changes generate no new warnings.
• Any dependent changes in other PRs have been merged and published.

Additional notes (optional)

N/A

Release notes

N/A

[Copilot]

Pull Request Overview

This PR renames methods in the CommitHandler and related classes to align with the latest Consensus Commit documentation. The key changes include renaming from "prepare" to "prepareRecords" and "validate" to "validateRecords" across both production and test code, ensuring consistent method naming throughout the codebase.

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
integration-test/src/main/java/com/scalar/db/transaction/consensuscommit/ConsensusCommitSpecificIntegrationTestBase.java	Updated method calls to use the new prepareRecords method.
core/src/test/java/com/scalar/db/transaction/consensuscommit/TwoPhaseConsensusCommitTest.java	Renamed test methods and internal calls to match the new method names.
core/src/test/java/com/scalar/db/transaction/consensuscommit/ParallelExecutorTest.java	Updated test method names and calls to parallelExecutor to use prepareRecords and validateRecords.
core/src/main/java/com/scalar/db/transaction/consensuscommit/TwoPhaseConsensusCommit.java	Modified implementation to call prepareRecords and validateRecords.
core/src/main/java/com/scalar/db/transaction/consensuscommit/Snapshot.java	Changed validate call to validateRecords.
core/src/main/java/com/scalar/db/transaction/consensuscommit/ParallelExecutor.java	Updated method names for preparation and validation tasks.
core/src/main/java/com/scalar/db/transaction/consensuscommit/CommitHandler.java	Changed commit flow to use the new prepareRecords and validateRecords methods and removed redundant code.

[Torch3333]

LGTM, thank you!

[feeblefakie]

LGTM! Thank you!

[komamitsu]

LGTM! 👍

[brfrn169]

@Torch3333 I'll merge this. Please take a look when you have time!