fix: improve DeepLinkErrorView code quality

- Fix TypeScript property error by using validRoutes constant
- Replace console.log with logger utility
- Fix string quote consistency
- Improve v-for loop variable naming
- Add proper type safety for route parameters

Technical Changes:
- Use VALID_DEEP_LINK_ROUTES constant for route list
- Add logger import and replace console.log calls
- Standardize string quotes to double quotes
- Rename v-for variable to avoid shadowing
- Add proper type assertions for route params

This improves code quality and type safety in the
DeepLinkErrorView component while maintaining consistent
coding standards.

src/views/ConfirmGiftView.vue

@@ -829,7 +829,7 @@ export default class ConfirmGiftView extends Vue {
         3000,
       );
     } else {
-      console.error("Got error submitting the confirmation:", result);
+      logger.error("Got error submitting the confirmation:", result);
       this.$notify(
         {
           group: "alert",