fix(client): force server reload for /account/* routes unknown to WASM router

AuthBlocksWeb pages live in a server-only assembly not bundled in the WASM
client. When InteractiveAuto switches routing to WASM, /account/login has
no matching component and shows NotFound. Routes.razor now intercepts
NotFound for /account/* paths and forces a full-page reload to the server
router, which knows the real login page via AddAdditionalAssemblies.

DeepDrftWeb.Client/Routes.razor

@@ -10,4 +10,15 @@
             </NotAuthorized>
         </AuthorizeRouteView>
     </Found>
+    <NotFound>
+        @{
+            // Routes owned by server-side assemblies (e.g. /account/*) are not visible to the
+            // WASM router. Force a full-page reload so the server router handles them instead.
+            var path = new Uri(NavigationManager.Uri).AbsolutePath;
+            if (path.StartsWith("/account", StringComparison.OrdinalIgnoreCase))
+            {
+                NavigationManager.NavigateTo(NavigationManager.Uri, forceLoad: true);
+            }
+        }
+    </NotFound>
 </Router>