Fix flaky test CRFunModeHistoryTest.test_trace_all

[dweindl]

The previous check did not handle large values too well. Failed here: https://github.com/ICB-DCM/pyPESTO/runs/7724332758?check_suite_focus=true

[codecov-commenter]

Codecov Report

Merging #917 (af6c828) into develop (b1242c3) will increase coverage by 4.23%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #917      +/-   ##
===========================================
+ Coverage    84.05%   88.29%   +4.23%     
===========================================
  Files          114      114              
  Lines         7766     7766              
===========================================
+ Hits          6528     6857     +329     
+ Misses        1238      909     -329     

Impacted Files	Coverage Δ
pypesto/store/save_to_hdf5.py	96.82% <0.00%> (+1.58%)	⬆️
pypesto/store/hdf5.py	95.83% <0.00%> (+12.50%)	⬆️
pypesto/select/__init__.py	66.66% <0.00%> (+66.66%)	⬆️
pypesto/select/model_problem.py	90.38% <0.00%> (+90.38%)	⬆️
pypesto/select/method.py	92.91% <0.00%> (+92.91%)	⬆️
pypesto/visualize/select.py	93.33% <0.00%> (+93.33%)	⬆️
pypesto/select/misc.py	100.00% <0.00%> (+100.00%)	⬆️
pypesto/select/problem.py	100.00% <0.00%> (+100.00%)	⬆️
pypesto/select/postprocessors.py	100.00% <0.00%> (+100.00%)	⬆️

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[yannikschaelte]

looks good