Remove Microsoft.AspNetCore.SpaServices.Extensions dependency on Microsoft.AspNetCore.SpaServices

[ANahr]

There was already an issue for removing Microsoft.AspNetCore.SpaServices.Extensions dependency on Microsoft.AspNetCore.SpaServices #11627.

That issue was closed as fixed. However when having a look at https://www.nuget.org/packages/Microsoft.AspNetCore.SpaServices.Extensions/ you can see that this does not seem to be the case.

[mkArtakMSFT]

@pranavkm I assume this should be marked as Done already?