Net8 tests

[michaelgsharp]

Updating tests to work on net8

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.20%. Comparing base (d4bc05d) to head (af004c4).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7319      +/-   ##
==========================================
+ Coverage   68.87%   69.20%   +0.33%     
==========================================
  Files        1470     1473       +3     
  Lines      274005   270650    -3355     
  Branches    28403    27880     -523     
==========================================
- Hits       188727   187313    -1414     
+ Misses      77959    76022    -1937     
+ Partials     7319     7315       -4     

Flag	Coverage Δ
Debug	69.20% <100.00%> (+0.33%)	⬆️
production	63.61% <100.00%> (+0.32%)	⬆️
test	89.42% <ø> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
....CodeGenerator/Templates/Console/PredictProject.cs	46.00% <100.00%> (ø)
src/Microsoft.ML.Core/CommandLine/CmdParser.cs	56.81% <100.00%> (+0.11%)	⬆️
src/Microsoft.ML.Data/Utilities/TimerScope.cs	100.00% <100.00%> (ø)
...soft.ML.EntryPoints/JsonUtils/JsonManifestUtils.cs	83.66% <ø> (ø)
...t.ML.FastTree/TreeEnsemble/InternalTreeEnsemble.cs	68.19% <100.00%> (ø)
...crosoft.ML.Core.Tests/UnitTests/TestEntryPoints.cs	98.45% <ø> (ø)
test/Microsoft.ML.FSharp.Tests/SmokeTests.fs	87.23% <ø> (-0.53%)	⬇️
...est/Microsoft.ML.Predictor.Tests/TestPredictors.cs	69.62% <ø> (ø)
...est/Microsoft.ML.TestFramework/BaseTestBaseline.cs	75.94% <ø> (+0.04%)	⬆️
test/Microsoft.ML.TestFramework/BaseTestClass.cs	88.05% <ø> (-0.18%)	⬇️
... and 2 more

... and 29 files with indirect coverage changes

[smp73]

Have a Nice day 😊