fix broken test on Postgres with PHP 8.2

[mringler]

Fixes broken tests. Apparently, the order of retrieved objects has to be set, which makes sense. Curious though that the problem only started to appear just recently and only with Postgres on PHP 8.2.

Failed runs can be seen here and here

[codecov-commenter]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (4f36eea) 89.27% compared to head (bf3ebb5) 89.27%.

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Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1980   +/-   ##
=========================================
  Coverage     89.27%   89.27%           
  Complexity     8049     8049           
=========================================
  Files           232      232           
  Lines         24519    24519           
=========================================
  Hits          21889    21889           
  Misses         2630     2630           

Flag	Coverage Δ
5-max	89.27% <ø> (ø)
7.4	89.27% <ø> (ø)
agnostic	67.47% <ø> (ø)
mysql	69.81% <ø> (ø)
pgsql	69.83% <ø> (ø)
sqlite	67.80% <ø> (ø)

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