Backport of Use correct enterprise meta on wildcard service update into release/1.16.x (#20727)

* backport of commit 94a0aa2ea7

* backport of commit f0e1badd6f

* backport of commit 183dd2fb12

---------

Co-authored-by: Sarah Alsmiller <sarah.alsmiller@hashicorp.com>

.changelog/_20721.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+ingress-gateway: **(Enterprise Only)** Fix a bug where on update, Ingress Gateways lost all upstreams for listeners with wildcard services in a different namespace.
+```

agent/consul/state/catalog.go

@@ -3557,7 +3557,7 @@ func updateGatewayServices(tx WriteTxn, idx uint64, conf structs.ConfigEntry, en
 	for _, svc := range gatewayServices {
 		// If the service is a wildcard we need to target all services within the namespace
 		if svc.Service.Name == structs.WildcardSpecifier {
-			if err := updateGatewayNamespace(tx, idx, svc, entMeta); err != nil {
+			if err := updateGatewayNamespace(tx, idx, svc, &svc.Service.EnterpriseMeta); err != nil {
 				return fmt.Errorf("failed to associate gateway %q with wildcard: %v", gateway.String(), err)
 			}
 			// Skip service-specific update below if there was a wildcard update