[1.4.0] TracerProviderBuilder.AddInstrumentation delegate not called

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Bug Report

Using the 1.4.0 SDK the TracerProviderBuilder.AddInstrumentation extension which receives the TracerProvider instance is never called:

using var provider =Sdk.CreateTracerProviderBuilder()
   .AddInstrumentation((sp, provider) => new MyInstrumentation(provider)}) // <- This will never be called
   .Build();

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This will be fixed in 1.5.0. If you are reading this because you ran into it using 1.4.0 and can't wait, please reply on this issue and we will consider doing a hotfix for 1.4.0.