Handle notification errors

[dnfield]

Description

This specifies the unhandled JSON RPC errors to ignore notification related errors.

Per the spec, the server is not to send anything back to the client on a notification. If, however, the client sends a notification for a method that isn't registered, the RPC server is now pumping that back to our handler. This adds logic to the handlers to log and ignore these exceptions. The logs may be helpful for developers working on VM service communication, but not helpful otherwise. Historically, these exceptions were swallowed.

Related Issues

Addresses part of #31813 - see also #28531

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[jonahwilliams]

LGTM