JP-3473: Include non_science pixels in count of excluded pixels

[tapastro]

Resolves JP-3473

Closes #8087

This PR addresses a bug found in the pixel replacement code. When a spatial profile contains pixels all flagged either DO_NOT_USE or NON_SCIENCE, the profile is incorrectly added to the list to be worked on, despite no pixels being considered a science pixel. NON_SCIENCE pixels are now included in the count of pixels to exclude from consideration.

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

[tapastro]

Regtest run started here: https://plwishmaster.stsci.edu:8081/job/RT/job/JWST-Developers-Pull-Requests/1064/

[codecov]

Codecov Report

Attention: 18 lines in your changes are missing coverage. Please review.

Comparison is base (e674c9d) 75.92% compared to head (116f52a) 75.92%.

Files	Patch %	Lines
jwst/pixel_replace/pixel_replace.py	0.00%	18 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8090      +/-   ##
==========================================
- Coverage   75.92%   75.92%   -0.01%     
==========================================
  Files         459      459              
  Lines       37615    37619       +4     
==========================================
  Hits        28561    28561              
- Misses       9054     9058       +4     

Flag	Coverage Δ		*Carryforward flag
nightly	77.37% <ø> (ø)		Carriedforward from e674c9d

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[hbushouse]

The 2 regtest failures are unrelated. Looks good.