fix(backend): correct federation port forwarding tunnel type handling (#123)

- Fix Type 1 (port forwarding) tunnels to call applyFederationRuntime
  Previously only Type 2 tunnels applied federation runtime, causing
  port forwarding tunnels to not be properly configured in federation mode

- Remove incorrect UDP tunnel type override in federationTunnelCreate
  UDP tunnels were being incorrectly set to Type 2, which conflicted with
  the federation runtime logic that expects Type 1 for port forwarding

These fixes ensure all tunnel types are properly handled in federation mode
with correct runtime configuration applied.

go-backend/internal/http/handler/federation.go

@@ -780,9 +780,6 @@ func (h *Handler) federationTunnelCreate(w http.ResponseWriter, r *http.Request)
 	}
 
 	tunnelType := 1
-	if strings.ToLower(req.Protocol) == "udp" {
-		tunnelType = 2
-	}
 
 	tx, err := h.repo.DB().Begin()
 	if err != nil {