Rate limits will automatically be checked by definitelyCan(),
authorizeRead() and authorizeWrite(). The authorize methods also
increment the counter.
UserAuthority tracks which limits have already been incremented during
the current request, to avoid duplicate increments caused by code that
still calls pingLimiter directly.
DEPLOY: Risky! We SHOULD not hit rate limits more often, but we might.
Rate limit metrics should be monitored closely, see
<https://grafana.wikimedia.org/d/8oA6CWr4z/mw-rate-limiting-overview>.
Bug: T310476
Depends-On: Iebd62b0487af9172edaeae41c9b31aaf2f20fd06
Change-Id: Ic349f03b7040343815b60b0a2c84a5780326c797
a8ee61d9d6