The new dotnet SDK `ParallelCompilation=true` causing issues in TypeProviders

[Thorium]

I'm linking this here, because the TypeProvider code is included with this repository as well.

ProvidedTypeDefinition member realization is not thread-safe, causes users to get errors like FS0193: type 'X' is not compatible with type 'X' and FS0001: type 'X' does not match type 'X' under ParallelCompilation=true (new default option).

Further details and suggested fix in the TypeProvider SDK repository:
fsprojects/FSharp.TypeProviders.SDK#521