Worker may not restart when crashing in multi-language environment

[brettsam]

The code here checks whether the FUNCTIONS_WORKER_RUNTIME matches that of the worker that just crashed. In Functions-hosted scenarios, this works becuase there is only one worker language. However, in Logic Apps scenarios, the FUNCTIONS_WORKER_RUNTIME means very little and should not even be checked here.

The problem is this can cause a crashed worker to never restart. The host doesn't know this, so it continues accepting invocations and they all eventually timeout forever until the host is restarted.