[Wasm][AOT] System.NotImplementedException : The method or operation is not implemented. #49229

In effort to run library tests with AOT compilation and EnableAggressiveTrimming enabled on CI #48226 these errors are hit.

• System.NotImplementedException : The method or operation is not implemented.
  System.Collections.Concurrent.Tests log
  System.Collections.Tests log
  System.Net.Primitives.Functional.Tests log
  Microsoft.Extensions.Configuration.Binder.Tests log
  System.Globalization.Tests log

Repro:
Check out changes in
4f17c4e without this, many tests are not discovered.
4e7ab85 this one helps avoid some AOT compilation errors with this exception filter. There shouldn't be exception filter issues anymore.

./build.sh -os Browser -arch wasm -c Release
./dotnet.sh build /t:Test /p:TargetOS=Browser /p:TargetArchitecture=wasm /p:Configuration=Release /p:EnableAggressiveTrimming=true /p:RunAOTCompilation=true src/libraries/<path-to-test-proj>