Handle panicking tests

[AlekSi]

Description

Stack traces are no longer hidden.

Readiness checklist

• I added/updated unit tests (and they pass).
• I added/updated integration/compatibility tests (and they pass).
• I added/updated comments and checked rendering.
• I made spot refactorings.
• I updated user documentation.
• I ran task all, and it passed.
• I ensured that PR title is good enough for the changelog.
• (for maintainers only) I set Reviewers (@FerretDB/core), Milestone (Next), Labels, Project and project's Sprint fields.
• I marked all done items in this checklist.

[codecov]

Codecov Report

Merging #3711 (0c7a403) into main (74009c0) will decrease coverage by 0.15%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3711      +/-   ##
==========================================
- Coverage   76.38%   76.23%   -0.15%     
==========================================
  Files         323      323              
  Lines       23029    23029              
==========================================
- Hits        17591    17557      -34     
- Misses       4402     4434      +32     
- Partials     1036     1038       +2     

see 10 files with indirect coverage changes

Flag	Coverage Δ
filter-true	72.27% <ø> (-0.15%)	⬇️
hana-1	?
integration	72.27% <ø> (-0.15%)	⬇️
mongodb-1	5.46% <ø> (ø)
postgresql-1	52.51% <ø> (+0.16%)	⬆️
postgresql-2	51.63% <ø> (-0.01%)	⬇️
postgresql-3	50.69% <ø> (ø)
sort-false	72.27% <ø> (-0.15%)	⬇️
sqlite-1	51.68% <ø> (ø)
sqlite-2	50.86% <ø> (-0.04%)	⬇️
sqlite-3	49.90% <ø> (ø)
unit	30.09% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

[noisersup]

Thank you!

[rumyantseva]

LGTM