[HUDI-4902] Set default partitioner for SIMPLE BUCKET index

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Change Logs

ISSUE: https://github.com/apache/hudi/issues/6723

When we use BUCKET index in spark, the default BUCKET_INDEX_ENGINE_TYPE is SIMPLE. While only SparkBucketIndexPartitioner supports the SIMPLE bucket index.

This pr sets default partitioner for SIMPLE BUCKET index

Impact

Describe any public API or user-facing feature change or any performance impact.

Risk level: none | low | medium | high

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Contributor's checklist

• [ ] Read through contributor's guide
• [ ] Change Logs and Impact were stated clearly
• [ ] Adequate tests were added if applicable
• [ ] CI passed

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CI report:

• 74953bcb6c064234c22808fed8d155e75fa226d5 Azure: SUCCESS

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