[Feature Request] Add API for InitiateLongRunningProcessInWebApi to search in cache

[pmaytak]

Is your feature request related to a problem? Please describe.
In 4.50.0 and below, InitiateLongRunningProcessInWebApi always checks the cache for access or refresh tokens and when matching it ignores the assertion hash in the request. In 4.51.0 - 4.53.0, InitiateLongRunningProcessInWebApiwas updated to not check the cache at all and just use the request user assertion to retrieve tokens from AAD. There's a request to add the legacy behavior.

Describe the solution you'd like
Add WithSearchInCacheForLongRunningProcess(bool) API. In OnBehalfOfRequest class, use the flag to check for access and refresh tokens.