Add setting to ignore merge sets with only protected words

[imnasnainaec]

Protected data setting on QA:

Protected data settings with this PR:

---

This change is 

[codecov]

Codecov Report

❌ Patch coverage is 46.66667% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.24%. Comparing base (e082cf9) to head (91f6bd8).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...omponents/ProjectSettings/ProjectProtectedData.tsx	45.45%	6 Missing ⚠️
Backend/Helper/DuplicateFinder.cs	42.85%	2 Missing and 2 partials ⚠️
Backend/Controllers/MergeController.cs	0.00%	3 Missing ⚠️
Backend/Services/MergeService.cs	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3919      +/-   ##
==========================================
- Coverage   74.28%   74.24%   -0.05%     
==========================================
  Files         292      292              
  Lines       10628    10642      +14     
  Branches     1342     1344       +2     
==========================================
+ Hits         7895     7901       +6     
- Misses       2352     2358       +6     
- Partials      381      383       +2     

Flag	Coverage Δ
backend	85.41% <37.50%> (-0.09%)	⬇️
frontend	65.87% <57.14%> (-0.03%)	⬇️

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[jasonleenaylor]

@jasonleenaylor reviewed 19 of 19 files at r1, 2 of 2 files at r2, 9 of 9 files at r3, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @imnasnainaec)