Avoid passing incompatible argument to ninja in build.ps1

[mtfriesen]

Description

Describe the purpose of and changes within this Pull Request.

The VERBOSE=1 arg is nonstandard and not supported by Ninja build, so pass that param only to default or "cmake" generators.

Testing

Do any existing tests cover this change? Are new tests needed?

Seems to work on my machine.

Documentation

Is there any documentation impact for this change?

Nope.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.06%. Comparing base (5caaedc) to head (2a196b4).
Report is 12 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5038      +/-   ##
==========================================
- Coverage   87.26%   87.06%   -0.20%     
==========================================
  Files          59       59              
  Lines       18011    18011              
==========================================
- Hits        15717    15681      -36     
- Misses       2294     2330      +36     

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