Increase block size from 224 to 256 in eval method to make consistent with documentation

[MassEast]

Pretty sure it should be 256 as it's 256 here as well.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 42.19%. Comparing base (4b4ffd7) to head (bf958cb).
⚠️ Report is 17 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (4b4ffd7) and HEAD (bf958cb). Click for more details.

HEAD has 5 uploads less than BASE

Flag	BASE (4b4ffd7)	HEAD (bf958cb)
	6	1

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1330      +/-   ##
==========================================
- Coverage   48.89%   42.19%   -6.71%     
==========================================
  Files          16       16              
  Lines        3767     3773       +6     
==========================================
- Hits         1842     1592     -250     
- Misses       1925     2181     +256     

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