Adding sort by timestamp during merge operation and changed default merge policy to log byte merge

[dhwanilpatel]

Description

• Adding sort by timestamp during merge operation
• Changed default policy to log byte merge policy

Related Issues

Resolves #[Issue number to be closed when this PR is merged]

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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✨ Finishing touches

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[github-actions]

❌ Gradle check result for 6a7b148: FAILURE

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❌ Gradle check result for 344a91d: FAILURE

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❌ Gradle check result for b0856e3: FAILURE

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[opensearch-trigger-bot]

This PR is stalled because it has been open for 30 days with no activity.