Hosting Features: Support redirect_to param for activation (#95160)

client/hosting/hosting-features/components/hosting-features.tsx

@@ -42,6 +42,7 @@ const HostingFeatures = () => {
 	const dispatch = useDispatch();
 	const { searchParams } = new URL( document.location.toString() );
 	const showActivationModal = searchParams.get( 'activate' ) !== null;
+	const redirectToParam = searchParams.get( 'redirect_to' );
 	const [ showEligibility, setShowEligibility ] = useState( showActivationModal );
 	const siteId = useSelector( getSelectedSiteId );
 	const { siteSlug, isSiteAtomic, hasSftpFeature, isPlanExpired } = useSelector( ( state ) => ( {
@@ -137,7 +138,9 @@ const HostingFeatures = () => {
 		dispatch( recordTracksEvent( 'calypso_hosting_features_activate_confirm' ) );
 		const params = new URLSearchParams( {
 			siteId: String( siteId ),
-			redirect_to: addQueryArgs( redirectUrl, { hosting_features: 'activated' } ),
+			redirect_to: addQueryArgs( redirectToParam ?? redirectUrl, {
+				hosting_features: 'activated',
+			} ),
 			feature: FEATURE_SFTP,
 			initiate_transfer_context: 'hosting',
 			initiate_transfer_geo_affinity: options.geo_affinity || '',