feat: restrict certain UI elements for students in course sidebar and lesson pages

apps/dashboard/src/routes/course/[slug]/enroll/+page.svelte

@@ -84,7 +84,8 @@
         already_joined: result.data.alreadyJoined
       });
 
-      goto(result.data.redirectTo || '/lms');
+      // need to force page reload to avoid cache issues
+      window.location.href = result.data.redirectTo || '/lms';
     } finally {
       loading = false;
     }

apps/dashboard/src/routes/courses/[id]/certificates/+page.svelte

@@ -4,7 +4,7 @@
   import { t } from '$lib/utils/functions/translations';
 </script>
 
-<Page.Root class="mx-auto flex w-[calc(100vw-var(--sidebar-width))]!">
+<Page.Root class="mx-auto flex w-[calc(95vw-var(--sidebar-width))]!">
   <Page.Header>
     <Page.HeaderContent>
       <Page.Title>