JP-3509: Cut cube collapse for autocentroiding short of 26 microns

[drlaw1558]

Resolves JP-3509

Closes #8193

This PR addresses JP-3509 by ensuring that only cube wavelengths shortward of 26 microns are used for the IFU autocentroiding.

Checklist for maintainers

• added entry in CHANGES.rst within the relevant release section
• updated or added relevant tests
• updated relevant documentation
• added relevant milestone
• added relevant label(s)
• ran regression tests, post a link to the Jenkins job below.
  How to run regression tests on a PR
• Make sure the JIRA ticket is resolved properly

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (f23d4d9) 75.24% compared to head (853e74e) 75.24%.
Report is 4 commits behind head on master.

Files	Patch %	Lines
jwst/extract_1d/ifu.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8199      +/-   ##
==========================================
- Coverage   75.24%   75.24%   -0.01%     
==========================================
  Files         470      470              
  Lines       38431    38433       +2     
==========================================
  Hits        28919    28919              
- Misses       9512     9514       +2     

Flag	Coverage Δ		*Carryforward flag
nightly	77.37% <ø> (ø)		Carriedforward from f23d4d9

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[hbushouse]

Looks good to me.

[hbushouse]

Regtest started at https://plwishmaster.stsci.edu:8081/job/RT/job/JWST-Developers-Pull-Requests/1165

[hbushouse]

Regtest run 1165 got hung overnight. Starting a new one at https://plwishmaster.stsci.edu:8081/job/RT/job/JWST-Developers-Pull-Requests/1167

[hbushouse]

Latest regtest failures are all benign and unrelated.