Refactor IcebergAbstractMetadata to utilize newly defined SPI method

[hantangwangd]

Description

PR #21933 has deprecated SPI method ConnectorMetadata.getTableLayouts(), and introduced a new SPI method ConnectorMetadata.getTableLayoutForConstraint() to replace it.

This PR refactor IcebergAbstractMetadata to utilize the newly defined SPI method, and stop to use the deprecated method.

Motivation and Context

Make the implementation in IcebergAbstractMetadata more clear and concise

Test Plan

• Make sure the refactor do not affect existing test cases

Contributor checklist

• Please make sure your submission complies with our development, formatting, commit message, and attribution guidelines.
• PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced.
• Documented new properties (with its default value), SQL syntax, functions, or other functionality.
• If release notes are required, they follow the release notes guidelines.
• Adequate tests were added if applicable.
• CI passed.

Release Notes

== NO RELEASE NOTE ==

[tdcmeehan]

Thank you for the cleanup