style: include ENMI_EQUALS_ON_ENUM

[vil02]

Continuation of #5126.

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized it.
• All filenames are in PascalCase.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 38.60%. Comparing base (25d711c) to head (b586a80).

Files	Patch %	Lines
...ealgorithms/datastructures/crdt/LWWElementSet.java	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5189      +/-   ##
============================================
- Coverage     38.62%   38.60%   -0.02%     
+ Complexity     2379     2378       -1     
============================================
  Files           516      516              
  Lines         15385    15385              
  Branches       2957     2957              
============================================
- Hits           5942     5940       -2     
- Misses         9158     9159       +1     
- Partials        285      286       +1     

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