Related to #44956
This change propagates the useLoonFFI configuration through the import
pipeline to enable LOON FFI usage during data import operations.
Key changes:
- Add use_loon_ffi field to ImportRequest protobuf message
- Add manifest_path field to ImportSegmentInfo for tracking manifest
- Initialize manifest path when creating segments (both import and
growing)
- Pass useLoonFFI flag through NewSyncTask in import tasks
- Simplify pack_writer_v2 by removing GetManifestInfo method and relying
on pre-initialized manifest path from segment creation
- Update segment meta with manifest path after import completion
This allows the import workflow to use the LOON FFI based packed writer
when the common.useLoonFFI configuration is enabled.
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Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>