svelte_layout.html: fix localStore import name

src/assets/views/layouts/svelte_layout.html

@@ -7,7 +7,7 @@
     <script type="module" defer>
         import View from '/js/views/%canonicalViewName%.js';
         import * as stores from '/js/stores.js';
-        const localStore = stores[Object.keys(stores)[0]].locals;
+        const localStore = stores.s.locals;
 
         const localMap = %locals%;
         localStore.set((key, args) => {