JP-3248 MIRI Subarrays 390 Hz EMI bug fix 3

[penaguerrero]

Resolves JP-3248

Closes #

This PR addresses fixing bug with subarray=full readpattern=slow

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: 4 lines in your changes are missing coverage. Please review.

Comparison is base (31e3a22) 75.24% compared to head (c5a6305) 75.23%.
Report is 1 commits behind head on master.

Files	Patch %	Lines
jwst/emicorr/emicorr.py	60.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8151      +/-   ##
==========================================
- Coverage   75.24%   75.23%   -0.01%     
==========================================
  Files         470      470              
  Lines       38428    38432       +4     
==========================================
+ Hits        28915    28916       +1     
- Misses       9513     9516       +3     

Flag	Coverage Δ		*Carryforward flag
nightly	77.37% <ø> (ø)		Carriedforward from 31e3a22

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[hbushouse]

This PR branch has passed Misty's entire battery of MIRI test notebooks, so it looks good.