Fixes wcs conversions

[jmbhughes]

PR summary

Fixes wcs conversions to be valid for non Sun centered images

Todos

• clean up the changes

Test plan

Look at simpunch results. Makes sure current tests pass.

Breaking changes

None

Related Issues

None

[codecov]

Codecov Report

Attention: Patch coverage is 94.73684% with 7 lines in your changes missing coverage. Please review.

Project coverage is 92.28%. Comparing base (66ea8b7) to head (7a1acc8).
Report is 14 commits behind head on main.

Files	Patch %	Lines
punchbowl/data/wcs.py	93.84%	4 Missing ⚠️
punchbowl/level1/stray_light.py	80.00%	2 Missing ⚠️
punchbowl/level1/vignette.py	94.11%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #226      +/-   ##
==========================================
+ Coverage   91.03%   92.28%   +1.24%     
==========================================
  Files          40       41       +1     
  Lines        2433     2527      +94     
==========================================
+ Hits         2215     2332     +117     
+ Misses        218      195      -23     

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