Cleanup from last review

[rickhanlonii]

Summary

@thymikee pointed out some bugs with the last PR that were missed before merge:

• A test that was missing a flag
• The blacklist would only work for the first key

Test plan

Updated tests to add a second blacklist key

[codecov-io]

Codecov Report

Merging #5302 into master will decrease coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #5302      +/-   ##
==========================================
- Coverage   61.25%   61.23%   -0.02%     
==========================================
  Files         205      205              
  Lines        6893     6891       -2     
  Branches        4        4              
==========================================
- Hits         4222     4220       -2     
  Misses       2670     2670              
  Partials        1        1

Impacted Files	Coverage Δ
packages/jest-util/src/deep_cyclic_copy.js	95.83% <100%> (-0.33%)	⬇️

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[thymikee]

Oh yea, passing empty blacklist makes more sense than deleting from options, thanks for catching that! Cc @mjesun

[github-actions]

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