fix(node): drop a swept inbound's bookkeeping from the node runtime

The node Remote keeps a fingerprint, a remote id and possibly an alias
per inbound tag. When the master swept an inbound the node stopped
reporting, those entries stayed, so a node rotating tags grew the maps
for as long as the master ran. The sweep now hands every removed tag to
Remote.ForgetInbound, which drops all of it in both tag forms, and a
master-driven delete uses it too. The sweep's call is wiring;
TestRemoteForgetInboundDropsEveryTrace covers what it drops.

internal/web/node_contract_test.go

@@ -363,6 +363,7 @@ var remoteMethodsOutsideContract = map[string]string{
 	"AdoptedInboundAliases": "local alias bookkeeping",
 	"AdvancePushedInbound":  "local fingerprint bookkeeping",
 	"ForgetPushedInbound":   "local fingerprint bookkeeping",
+	"ForgetInbound":         "local bookkeeping for an inbound the node no longer has",
 	"UpdatePanel":           "replaces the node binary; node-sync is denied it on purpose (#6201)",
 }