change prepare_atom_data() call to work with tardis restructure

[jvshields]

Stardis uses up to date tardis. A recent tardis update changed the prepare_atom_data() function to require additional arguments. This PR makes stardis run again by adding the required arguments to the function call, and should be identical to previous behavior.

[andrewfullard]

I jumped the gun and apparently a test or two needs updating too

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (eba2b6d) 68.09% compared to head (5b1e37e) 68.09%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #169   +/-   ##
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  Coverage   68.09%   68.09%           
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  Files          31       31           
  Lines        1163     1163           
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  Hits          792      792           
  Misses        371      371           

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