Remote URL hardcoding compatibility (#1810)

* Remote URL compatibility
---------

Co-authored-by: jeffvli <jeffvictorli@gmail.com>

src/preload/index.d.ts

@@ -8,6 +8,7 @@ declare global {
         electron: ElectronAPI;
         LEGACY_AUTHENTICATION?: boolean;
         queryLocalFonts?: () => Promise<Font[]>;
+        REMOTE_URL?: string;
         SERVER_LOCK?: boolean;
         SERVER_NAME?: string;
         SERVER_TYPE?: ServerType;