Add insert static overwrite support for iceberg.

[liurenjie1024]

Fixes #13605 .

Description

Add insert static overwrite support for iceberg.

Checklists

• This PR has added documentation for new or modified features or behaviors.
• This PR has added new tests or modified existing tests to cover new code paths.
  (Please explain in the PR description how the new code paths are tested, such as names of the new/existing tests that cover them.)
• Performance testing has been performed and its results are added in the PR description. Or, an issue has been filed with a link in the PR description.

[Copilot]

Pull Request Overview

This PR adds GPU support for Iceberg INSERT OVERWRITE (static overwrite) operations by implementing the OverwriteByExpressionExec execution plan on GPU. The implementation follows a similar pattern to the existing AppendDataExec GPU support.

Key changes:

• Adds GPU execution plan class GpuOverwriteByExpressionExec for overwrite operations
• Implements Iceberg-specific GPU write support for overwrite with GpuOverwriteByFilter class
• Adds comprehensive integration tests covering various scenarios and fallback cases

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tools/generated_files/354/supportedExecs.csv	Adds OverwriteByExpressionExec to supported GPU operations list
tools/generated_files/354/operatorsScore.csv	Adds scoring entry for OverwriteByExpressionExec
sql-plugin/src/main/spark350/scala/org/apache/spark/sql/execution/datasources/v2/WriteToDataSourceV2Exec.scala	Implements GpuOverwriteByExpressionExec GPU execution plan class
sql-plugin/src/main/spark350/scala/com/nvidia/spark/rapids/shims/Spark350PlusNonDBShims.scala	Registers the new execution plan in the GPU conversion rules
sql-plugin/src/main/scala/org/apache/spark/sql/rapids/ExternalSource.scala	Adds external source support for overwrite operations
sql-plugin/src/main/scala/com/nvidia/spark/rapids/v2WriteCommandMetas.scala	Implements metadata handling for overwrite operations
sql-plugin/src/main/scala/com/nvidia/spark/rapids/iceberg/IcebergProvider.scala	Extends provider interface for overwrite support
integration_tests/src/main/python/iceberg/iceberg_overwrite_static_test.py	Comprehensive test suite for overwrite functionality
iceberg/src/main/scala/org/apache/iceberg/spark/source/write.scala	Implements GpuOverwriteByFilter batch write class
iceberg/src/main/scala/org/apache/iceberg/spark/source/GpuSparkWrite.scala	Updates GPU write logic to handle overwrite operations
iceberg/src/main/scala/com/nvidia/spark/rapids/iceberg/IcebergProviderImpl.scala	Implements Iceberg-specific overwrite GPU conversion logic

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[res-life]

NIT: extract a method?

[res-life]

LGTM

[liurenjie1024]

build