Tracking Issue for C++ for the future:

Customers have asked us how to clear the token cache shared by MSAL and Azure Identity. Currently there is no way to clear the cache, and we should add a section heading with this information (and a sentence on how to avoid using the cache).

Similar to this document here: https://github.com/Azure/azure-sdk-for-java/blob/main/sdk/identity/azure-identity/TOKEN_CACHING.md