fix(core-typings): make verification_url optional in CloudRegistrationIntentData

The cloud registration API does not always return verification_url
in the intent data response.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ggazzo

packages/core-typings/src/ICloud.ts

@@ -9,7 +9,7 @@ export type CloudRegistrationStatus = {
 export type CloudRegistrationIntentData = {
 	device_code: string;
 	user_code: string;
-	verification_url: string;
+	verification_url?: string;
 	interval: number;
 	expires_in: number;
 };