refactor: warm cache

[xgui3783]

No description provided.

[AhmetNSimsek]

A few notes but otherwise LGTM

[xgui3783]

@AhmetNSimsek can you take a look again when you get a chance?

I fixed the tests, and properly added flake

[codecov-commenter]

Codecov Report

Attention: 1234 lines in your changes are missing coverage. Please review.

Comparison is base (5a0e6b3) 36.81% compared to head (d073c0c) 53.70%.
Report is 346 commits behind head on main.

Files	Patch %	Lines
siibra/features/feature.py	47.89%	124 Missing ⚠️
siibra/volumes/volume.py	44.33%	118 Missing ⚠️
siibra/volumes/parcellationmap.py	19.70%	110 Missing ⚠️
siibra/explorer/url.py	0.00%	107 Missing ⚠️
siibra/core/region.py	62.50%	90 Missing ⚠️
...bra/features/connectivity/regional_connectivity.py	33.33%	56 Missing ⚠️
siibra/retrieval/datasets.py	49.53%	54 Missing ⚠️
siibra/explorer/util.py	0.00%	51 Missing ⚠️
...a/features/tabular/receptor_density_fingerprint.py	4.54%	42 Missing ⚠️
...a/features/tabular/regional_timeseries_activity.py	39.13%	42 Missing ⚠️
... and 34 more

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Additional details and impacted files

@@             Coverage Diff             @@
##             main     #537       +/-   ##
===========================================
+ Coverage   36.81%   53.70%   +16.88%     
===========================================
  Files          61       69        +8     
  Lines        5421     6582     +1161     
===========================================
+ Hits         1996     3535     +1539     
+ Misses       3425     3047      -378     

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