chore: Apply code formatting rules (IDE0005)

[filzrev]

This PR intended to fix a part of issue #9207.

What's changed in this PR

1. Change IDE0005: Remove unnecessary import severity to warning
2. Apply dotnet format command.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.40%. Comparing base (fe673ec) to head (5a39a23).
Report is 494 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10462      +/-   ##
==========================================
+ Coverage   74.31%   79.40%   +5.08%     
==========================================
  Files         536      547      +11     
  Lines       23189    23623     +434     
  Branches     4056     4061       +5     
==========================================
+ Hits        17234    18758    +1524     
+ Misses       4853     3695    -1158     
- Partials     1102     1170      +68     

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