Fixed CS9258

[glen-84]

Summary of the changes (Less than 80 chars)

• Fixed CS9258.

---

error CS9258: In language version preview, the 'field' keyword binds to a synthesized backing field for the property. To avoid generating a synthesized backing field, and to refer to the existing member, use 'this.field' or '@field' instead.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.00%. Comparing base (02b1ca8) to head (23c1639).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7713      +/-   ##
==========================================
+ Coverage   73.95%   74.00%   +0.05%     
==========================================
  Files        2917     2918       +1     
  Lines      151116   151252     +136     
  Branches    17560    17576      +16     
==========================================
+ Hits       111753   111935     +182     
+ Misses      33507    33466      -41     
+ Partials     5856     5851       -5     

Flag	Coverage Δ
unittests	74.00% <ø> (+0.05%)	⬆️

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