Devex: Add seed based on test parameters to json contains tests

[GeigerJ2]

This is to (hopefully) avoid flaky performance benchmark regressions like here by fixing the seed for the large JSON tests.

I'm not sure if it can be fully avoided with GHA runners, as their performance is inherently non-deterministic, but at least one can try 😅

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.27%. Comparing base (cf690e4) to head (8f1c5ae).

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #7047       +/-   ##
===========================================
+ Coverage   27.16%   79.27%   +52.11%     
===========================================
  Files         566      566               
  Lines       43807    43807               
===========================================
+ Hits        11896    34722    +22826     
+ Misses      31911     9085    -22826     

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[rabbull]

LGTM. Though probably fixed seeds would not entirely resolve the issue, it should at least alleviate it.

BTW I think it worth link to this existing issue: #6730

Update:
I noticed that a test is failing, but I can't see the relationship between the case and this PR. Is it also failing as well on main branch?