small fixes to help code stability

[timedilatesme]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.60%. Comparing base (094c997) to head (67fe415).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #423   +/-   ##
=======================================
  Coverage   98.60%   98.60%           
=======================================
  Files         104      104           
  Lines        8030     8032    +2     
=======================================
+ Hits         7918     7920    +2     
  Misses        112      112           

Files with missing lines	Coverage Δ
...eflectors/DeflectorPopulation/all_lens_galaxies.py	100.00% <100.00%> (ø)
...rs/DeflectorPopulation/elliptical_lens_galaxies.py	100.00% <100.00%> (ø)
slsim/FalsePositives/false_positive.py	100.00% <100.00%> (ø)
slsim/Lenses/selection.py	100.00% <ø> (ø)
slsim/Sources/SourcePopulation/galaxies.py	98.59% <100.00%> (ø)
slsim/Sources/SourcePopulation/point_sources.py	100.00% <100.00%> (ø)

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