Use native Iceberg reference expiration

[mkuchenbecker]

Stack

• Base: PR 708
• This PR

Summary

Replace the custom branch-reference removal pass from PR 708 with Iceberg's native reference expiration.

Snapshot-expiration maintenance backfills history.expire.max-ref-age-ms to seven days when the property is missing. New tables receive the same default during creation, while an existing configured value is preserved. Iceberg then expires eligible branches and tags through its standard snapshot-expiration commit.

Changes

• Client-facing API Changes
• Internal API Changes
• Bug Fixes
• New Features
• Performance Improvements
• Code Style
• Refactoring
• Documentation
• Tests

Testing Done

• Manually Tested on local docker setup. Please include commands ran, and their output.
• Added new tests for the changes made.
• Updated existing tests to reflect the changes made.
• No tests added or updated. Please explain why. If unsure, please feel free to ask for help.
• Some other form of testing like staging or soak time in production. Please explain.

A real Iceberg table integration test removes the property to simulate a legacy table, creates a branch and tag on an older snapshot, runs snapshot expiration, and verifies that the property is backfilled and both references expire. The integration test passes with Iceberg 1.2 and Iceberg 1.5.

The full OperationsTest suite passes for both application variants. OpenHouseInternalRepositoryImplTest verifies the table-creation default and preservation of a configured value. The affected Spotless checks pass.

Additional Information

• Breaking Changes
• Deprecations
• Large PR broken into smaller PRs, and PR plan linked in the description.