Filter pipeline: fixing empty pipeline, multi chunk, refactored queries.
Filter pipeline: fixing empty pipeline, multi chunk, refactored queries.

When running queries that have dimensions or attributes with and empty
filter pipeline, only the first chunks of a tile will be copied. This
also only happens for the refactored readers. Note that if there are
more cores than tiles, more chunks will be copied but likely not all.

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TYPE: IMPROVEMENT
DESC: Filter pipeline: fixing empty pipeline, multi chunk, refactored queries.

TileDB-Inc/TileDB,TileDB-Inc/TileDB,TileDB-Inc/TileDB,TileDB-Inc/TileDB