Switch to type_name() for things like logging since `type()` will
change to returning an enumeration value.
The functional change that this has is that log statements and
Connection::ToString() (used for logging) will contain "host"
instead of "local" and "srflx" instead of "stun".
Bug: webrtc:15846
Change-Id: I35c50d026e4578a25d51765d59c6f2e01b850c94
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/339180
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41757}