Stabilie the compression test

[akuzm]

Use the plan settings more systematically, and use a more selective
condition for index scan.

Disable-check: approval-count
Disable-check: force-changelog-file

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.37%. Comparing base (4c701e0) to head (1272838).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8213      +/-   ##
==========================================
+ Coverage   82.30%   82.37%   +0.07%     
==========================================
  Files         256      256              
  Lines       48016    47988      -28     
  Branches    12113    12109       -4     
==========================================
+ Hits        39518    39532      +14     
- Misses       3638     3654      +16     
+ Partials     4860     4802      -58     

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