Are Strings Interned When Used As Return Values in Switch Statements?

Question

Say I write a switch statement where the return value is a string. Are the strings that this switch statements return interned (since they may be referenced many times)?

Say we have an enumeration called DogBreed.

private static string DogBreedToString(DogBreed dogBreed)
{
   return dogBreed switch
   {
       DogBreed.GoldenRetriever => "golden_retriever",
       _ => throw new InvalidOperationException($"Breed ({dogBreed}) is unsupported"),
   };
}

In other words, if this gets called two times from two different parts of the code, will both parts of the code receive a reference to the same instance of "golden_retriever"?