Add bonus difficulty to split-descriptive-statistics for big datasets

[polinaeterna]

hopefully will fix JobManagerExceededMaximumDurationError for split-descriptive-statistics for big datasets like https://huggingface.co/datasets/Open-Orca/OpenOrca. It appears that loading data to in-memory table takes too much time

We can try like this and meanwhile I'm exploring other options how to query faster on big data

[codecov-commenter]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (d429191) 95.58% compared to head (d7388b3) 90.74%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1967      +/-   ##
==========================================
- Coverage   95.58%   90.74%   -4.85%     
==========================================
  Files          14      237     +223     
  Lines         521    14810   +14289     
==========================================
+ Hits          498    13439   +12941     
- Misses         23     1371    +1348     

Flag	Coverage Δ
jobs_cache_maintenance	95.58% <ø> (ø)
jobs_mongodb_migration	86.32% <ø> (?)
libs_libcommon	92.17% <ø> (?)
services_admin	85.44% <ø> (?)
services_api	86.79% <ø> (?)
services_rows	84.95% <ø> (?)
services_search	79.59% <ø> (?)
services_sse-api	94.16% <ø> (?)
services_worker	92.56% <ø> (?)

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Files	Coverage Δ
libs/libcommon/src/libcommon/config.py	77.16% <ø> (ø)

... and 222 files with indirect coverage changes

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