Use 'yes' to update modal dismiss option. (https://github.com/woocommerce/woocommerce-admin/pull/5152)

Fixes a bug in Atomic sites where dismissing the home screen modal would not set the option causing the modal to come back on each reload.

plugins/woocommerce-admin/client/homescreen/layout.js

@@ -123,7 +123,8 @@ export const Layout = ( {
 				<WelcomeModal
 					onClose={ () => {
 						updateOptions( {
-							woocommerce_task_list_welcome_modal_dismissed: true,
+							woocommerce_task_list_welcome_modal_dismissed:
+								'yes',
 						} );
 					} }
 				/>
@@ -166,7 +167,7 @@ export default compose(
 
 		const welcomeModalDismissed =
 			getOption( 'woocommerce_task_list_welcome_modal_dismissed' ) ===
-			'1';
+			'yes';
 
 		const welcomeModalDismissedIsResolving = isResolving( 'getOption', [
 			'woocommerce_task_list_welcome_modal_dismissed',