* feat: Add enable_hnsw option for payload field indexes
Add optional enable_hnsw parameter to all payload index types to control
whether additional HNSW graph links are built for each indexed field.
- Add enable_hnsw field to all 8 payload index param types
- Update gRPC proto definitions and conversions
- Update OpenAPI schema
- Modify HNSW graph builder to respect enable_hnsw flag
- Add enable_hnsw() helper methods to PayloadSchemaParams and PayloadFieldSchema
- Update all tests to include new field (default: None)
When enable_hnsw is true and payload_M > 0, additional HNSW links will
be built for the payload field. Default value is true for backward compatibility.
* Fix Some format problems
* fix: address comment problem
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Co-authored-by: EC2 Default User <ec2-user@ip-10-78-171-148.ec2.internal>
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