JP-2076 moved wrap_ra to assign_wcs

[jemorrison]

This PR fixes a bug in the s_region value calculated in assign_wcs for data at ra = 0 (border)
The wrap_ra routine in cube_build was moved to assign_wcs. The import statement in resample_spec to use wrap_ra is not moved to point to assign_wcs.util
This work also supports JP-364 - improving the speed of cube_build by using the values in s_region

Closes #6019
Resolves JP-2076

[codecov]

Codecov Report

Merging #6026 (12a8e06) into master (23a76da) will decrease coverage by 0.93%.
The diff coverage is 77.08%.

@@            Coverage Diff             @@
##           master    #6026      +/-   ##
==========================================
- Coverage   77.80%   76.86%   -0.94%     
==========================================
  Files         399      405       +6     
  Lines       35354    37186    +1832     
==========================================
+ Hits        27506    28582    +1076     
- Misses       7848     8604     +756     

Flag	Coverage Δ		*Carryforward flag
nightly	77.80% <100.00%> (ø)		Carriedforward from 7e1e59d
unit	56.65% <63.41%> (-0.22%)	⬇️

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
jwst/cube_build/cube_build_wcs_util.py	34.18% <60.00%> (+0.36%)	⬆️
jwst/assign_wcs/util.py	78.36% <82.75%> (-2.46%)	⬇️
jwst/cube_build/ifu_cube.py	60.64% <100.00%> (-12.06%)	⬇️
jwst/resample/resample_spec.py	96.36% <100.00%> (ø)
jwst/pipeline/calwebb_spec2.py	76.74% <0.00%> (-19.32%)	⬇️
jwst/ramp_fitting/utils.py	92.40% <0.00%> (-1.85%)	⬇️
jwst/source_catalog/source_catalog_step.py	89.06% <0.00%> (-1.27%)	⬇️
jwst/step.py	100.00% <0.00%> (ø)
... and 11 more

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[hbushouse]

Looks good to me. Any comments from our WCS experts? @nden