[ws-proxy] add missing permission for generated ssh key (#19201)

Author: iQQBot

components/ws-proxy/pkg/sshproxy/server.go

@@ -545,9 +545,11 @@ func (s *Server) GenerateSSHCert(ctx context.Context, userName string) (ssh.Sign
 		CertType:        ssh.UserCert,
 		Permissions: ssh.Permissions{
 			Extensions: map[string]string{
-				"permit-pty":            "",
-				"permit-user-rc":        "",
-				"permit-X11-forwarding": "",
+				"permit-pty":              "",
+				"permit-user-rc":          "",
+				"permit-X11-forwarding":   "",
+				"permit-port-forwarding":  "",
+				"permit-agent-forwarding": "",
 			},
 		},
 		Nonce:        nonce,