[MergeDups] Extract protected-reasons-text functions

[imnasnainaec]

Prequel to #3445

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This change is 

[codecov]

Codecov Report

Attention: Patch coverage is 2.12766% with 46 lines in your changes missing coverage. Please review.

Project coverage is 74.60%. Comparing base (5251099) to head (6bede96).

Files with missing lines	Patch %	Lines
...ergeDuplicates/MergeDupsStep/protectReasonUtils.ts	2.22%	44 Missing ⚠️
...uplicates/MergeDupsStep/MergeDragDrop/DropWord.tsx	0.00%	1 Missing ⚠️
...MergeDuplicates/MergeDupsStep/SenseCardContent.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3489      +/-   ##
==========================================
- Coverage   74.65%   74.60%   -0.05%     
==========================================
  Files         285      286       +1     
  Lines       10999    11005       +6     
  Branches     1338     1339       +1     
==========================================
- Hits         8211     8210       -1     
- Misses       2404     2411       +7     
  Partials      384      384              

Flag	Coverage Δ
backend	83.62% <ø> (ø)
frontend	66.58% <2.12%> (-0.09%)	⬇️

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