Mapping broke when upgrading from 12.0.0 to 12.0.1

[ahmednfwela]

Mapping configuration

//Mappings for properties A,B,C, ...
CreateMap<ProjectBase, SimpleProjectInfoVMBase>();
//Mappings for some extra properties (E,F,G) + the base (A,B,C,...)
CreateMap<ProjectBase, SimpleProjectInfoWithCommsVMBase>()
    .IncludeBase<ProjectBase, SimpleProjectInfoVMBase>();
//Mappings for some extra properties (X,Y,Z) + the base (A,B,C,...) + (E,F,G)
CreateMap<ProjectBase, SimpleProjectInfoWithCommsVM<ObjectId>>()
    //.IncludeBase<ProjectBase, SimpleProjectInfoVMBase>()
    .IncludeBase<ProjectBase, SimpleProjectInfoWithCommsVMBase>();

Version: 12.0.1

Expected behavior

Version 12.0.0 used to work without the commented line

//.IncludeBase<ProjectBase, SimpleProjectInfoVMBase>()

Actual behavior

Version 12.0.1 fails to validate (when calling AssertConfigurationIsValid) without the commented line
saying it can't find mappings for the base class for properties A,B,C, ...

---

Looking at the changes introduced in 12.0.1, I think this bug might be because of #4097 , but I have no idea why

[lbargaoanu]

Try the MyGet build.

[github-actions]

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