fix(react): use cookienames from options in auth provider

Even though you can set it, it's not being used

Author: blurrah

.changeset/tidy-cows-hang.md

@@ -0,0 +1,5 @@
+---
+"@labdigital/federated-token-react": patch
+---
+
+Use cookieNames from options when setting up auth provider

packages/react/src/provider.tsx

@@ -110,7 +110,10 @@ export function AuthProvider({
 		loading: true,
 	});
 
-	const cookieNames = DEFAULT_COOKIE_NAMES;
+	const cookieNames = {
+		...DEFAULT_COOKIE_NAMES,
+		...options.cookieNames,
+	};
 
 	const updateAuthState = useCallback((token?: TokenData) => {
 		if (token?.isAuthenticated) {