fix: domain validation message display logic

Check for both message and cdnProvider before showing CDN status to
prevent displaying "Behind undefined" when cdnProvider is missing.

apps/dokploy/components/dashboard/application/domains/show-domains.tsx

@@ -39,6 +39,7 @@ export type ValidationState = {
 	error?: string;
 	resolvedIp?: string;
 	message?: string;
+	cdnProvider?: string;
 };
 
 export type ValidationStates = Record<string, ValidationState>;
@@ -355,7 +356,7 @@ export const ShowDomains = ({ id, type }: Props) => {
 																	) : validationState?.isValid ? (
 																		<>
 																			<CheckCircle2 className="size-3 mr-1" />
-																			{validationState.message
+																			{validationState.message && validationState.cdnProvider
 																				? `Behind ${validationState.cdnProvider}`
 																				: "DNS Valid"}
 																		</>