Re: [webrtc-stats] Clarify that metrics are undefined when their value is not yet determined or unknown (#736)

If there is no current (e.g. currentRoundTripTime), then it is not applicable. Not applicable => undefined.
Same reasoning applies to encoderImplementation. If there is no current encoder, then enoderImplementation is not applicable, so its undefined.

A counted feature starting at 0 is separate, if something has happened no times then the counter is 0, its a superflous sentence in the spec

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Received on Thursday, 2 March 2023 13:19:11 UTC