Fix missing references to enterprise metadata (#16237)

agent/proxycfg/api_gateway.go

@@ -243,10 +243,10 @@ func (h *handlerAPIGateway) handleInlineCertConfigUpdate(_ context.Context, u Up
 		return fmt.Errorf("invalid type for config entry: %T", resp.Entry)
 	}
 
-	// TODO Consider if unset SectionName and acl.EnterpriseMeta could trip us up
 	ref := structs.ResourceReference{
 		Kind:           cfg.GetKind(),
 		Name:           cfg.GetName(),
+		EnterpriseMeta: *cfg.GetEnterpriseMeta(),
 	}
 
 	snap.APIGateway.Certificates.Set(ref, cfg)
@@ -264,10 +264,10 @@ func (h *handlerAPIGateway) handleRouteConfigUpdate(ctx context.Context, u Updat
 		return nil
 	}
 
-	// TODO Consider if unset SectionName and acl.EnterpriseMeta could trip us up
 	ref := structs.ResourceReference{
 		Kind:           resp.Entry.GetKind(),
 		Name:           resp.Entry.GetName(),
+		EnterpriseMeta: *resp.Entry.GetEnterpriseMeta(),
 	}
 
 	seenUpstreamIDs := make(map[UpstreamID]struct{})