hs: Explain why we reset the directory connection timestamp client side
In the v2 HS subsystem we have this in rendclient.c in
/* restart their timeout values, so they get a fair shake at * connecting to the hidden service. */ base_conn->timestamp_created = now; base_conn->timestamp_lastread = now; base_conn->timestamp_lastwritten = now;
We've taken the same thing into the v3 client in #17242 (moved) but we need a comment that explains why we do that because
get a fair shake is not very helpful :).