auto-docs: Update property docs for tag v26.1.6

[vbotbuildovich]

This PR auto-generates updated Redpanda property documentation for v26.1.6.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 88ca0c48-f21a-4b55-a393-02d4a9918341

📥 Commits

Reviewing files that changed from the base of the PR and between b216ec2 and 139f9cd.

📒 Files selected for processing (5)

• antora.yml
• docs-data/redpanda-property-changes-v26.1.5-to-v26.1.6.json
• modules/reference/attachments/redpanda-properties-v26.1.5.json
• modules/reference/attachments/redpanda-properties-v26.1.6.json
• modules/reference/partials/properties/cluster-properties.adoc

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📝 Walkthrough

Walkthrough

This pull request updates documentation and configuration metadata from version 26.1.5 to 26.1.6. It removes the "greedy" option from the leader balancer optimization strategy across schema definitions and documentation, while updating Antora fallback version attributes and version comparison metadata.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Possibly related PRs

• auto-docs: Update property docs for tag v26.1.2 #1655: Modifies the same leader balancer mode enum schema and updates Antora version attributes, directly related to these changes.
• auto-docs: Update property docs for tag v25.3.9 #1589: Updates Antora fallback version metadata in antora.yml for the same documentation system.
• auto-docs: Update property docs for tag v25.3.3 #1529: Modifies the same documentation files and schema property definitions.

Suggested reviewers

• JakeSCahill

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description is minimal and lacks required template sections including JIRA ticket reference, page previews, and check categories.	Add complete description following the template: include JIRA ticket resolution link, page preview URLs, review deadline, and check the appropriate change category checkbox.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main change: updating property documentation for the v26.1.6 release tag.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch update-property-docs-v26.1.6

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