Always use atoms in both helices and beta sheets in the DSSP filter

[hannahbaumann]

Checklist

• Added a news entry

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• I certify that this contribution is covered by the MIT License here and the Developer Certificate of Origin at https://developercertificate.org/.

[IAlibay]

I suspect the tests failing is going to change with #1438 - I'm going to put a soft block on this so that we merge that PR first and then make relevant test fixes here.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.01%. Comparing base (a70c8cf) to head (023efeb).
⚠️ Report is 97 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1462      +/-   ##
==========================================
- Coverage   95.20%   93.01%   -2.19%     
==========================================
  Files         165      165              
  Lines       12478    12476       -2     
==========================================
- Hits        11880    11605     -275     
- Misses        598      871     +273     

Flag	Coverage Δ
fast-tests	93.01% <100.00%> (?)
slow-tests	?

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[github-actions]

No API break detected ✅