Cherry-picking Python Portable Date Type

[ahmedabu98]

CP for #38078

[ahmedabu98]

R: @Amar3tto

[gemini-code-assist]

Summary of Changes

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This pull request implements a new 'Date' logical type within the Apache Beam Python SDK to improve handling of date-related data types. It also updates the Managed Iceberg integration tests to use more robust catalog configurations and includes necessary infrastructure adjustments to trigger relevant test suites.

Highlights

• Date Logical Type Implementation: Introduced a new 'Date' logical type in the Apache Beam Python SDK to support 'datetime.date' objects, mapping them to days since the epoch.
• Integration Test Updates: Updated the Managed Iceberg integration test to use BigLake catalog properties and included date-based data in the test rows.
• Infrastructure Triggers: Modified several trigger files in the .github directory to ensure specific test suites are executed.

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