server,test: refresh cache on each NewAuthStore

- permissions were incorrectly loaded on restarts.
- #14355
- Backport of https://github.com/etcd-io/etcd/pull/14358

Signed-off-by: vivekpatani <9080894+vivekpatani@users.noreply.github.com>

server/auth/store.go

@@ -1073,6 +1073,8 @@ func NewAuthStore(lg *zap.Logger, be backend.Backend, tp TokenProvider, bcryptCo
 
 	as.setupMetricsReporter()
 
+	as.refreshRangePermCache(tx)
+
 	tx.Unlock()
 	be.ForceCommit()