[MergeDups] Clean up auto-merging of definitions

[imnasnainaec]

This change is 

[codecov-commenter]

Codecov Report

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

Comparison is base (92ac295) 72.82% compared to head (5314dc6) 72.81%.

Files	Patch %	Lines
...rc/goals/MergeDuplicates/Redux/MergeDupsReducer.ts	63.63%	1 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2898      +/-   ##
==========================================
- Coverage   72.82%   72.81%   -0.02%     
==========================================
  Files         264      264              
  Lines       10016    10019       +3     
  Branches     1183     1184       +1     
==========================================
+ Hits         7294     7295       +1     
- Misses       2378     2379       +1     
- Partials      344      345       +1     

Flag	Coverage Δ
backend	83.09% <ø> (ø)
frontend	63.27% <63.63%> (-0.02%)	⬇️

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[jmgrady]

Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @imnasnainaec)