fix: loosing data when moving between steps on the checkout (#440)

* fix(theme): prevent user to click on next steps in the checkout

* feat(theme): added an asyncLocalStorage helper

* fix(theme): added feature so the User Account is filled in

* fix(theme): user can't go pages directly

* feat(theme): a helpers for validating is the user has access to a specific step in the checkout

* feat(theme): implemented the validation in the checkout steps

* test: added tests for asyncLocalStorage and the steps helper

Author: KevinGorjan

packages/theme/pages/Checkout/Payment.vue

@@ -217,6 +217,13 @@ export default defineComponent({
       await load();
     });
 
+    onMounted(async () => {
+      const validStep = await isPreviousStepValid('billing');
+      if (!validStep) {
+        await router.push(app.localePath('/checkout/user-account'));
+      }
+    });
+
     const processOrder = async () => {
       await make();
       setCart(null);