add back button to 401 error page

Author: danilopolani

resources/views/stubs/401.blade.php.stub

@@ -6,5 +6,11 @@
 @endphp
 
 <x-filament::layouts.card title="Unauthorized">
-    Your account is not authorized to perform this action.
+    <p class="mb-6">Your account is not authorized to perform this action.</p>
+
+    <a href="/">
+        <x-filament::button class="w-full">
+            Go back
+        </x-filament::button>
+    </a>
 </x-filament::layouts.card>