repl: fix dedup comparing normalized line against raw history

[watilde]

This ensures consistency in how the REPL history handles duplicate entries.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.63%. Comparing base (d44a71a) to head (a271a72).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #62886      +/-   ##
==========================================
+ Coverage   89.61%   89.63%   +0.01%     
==========================================
  Files         706      706              
  Lines      219203   219203              
  Branches    41995    42001       +6     
==========================================
+ Hits       196445   196472      +27     
+ Misses      14663    14630      -33     
- Partials     8095     8101       +6     

Files with missing lines	Coverage Δ
lib/internal/repl/history.js	93.62% <100.00%> (ø)

... and 43 files with indirect coverage changes

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[watilde]

rebase and make the commit Verified.