fix(core): share page show 404 (#9083)

tests/affine-cloud/e2e/share-page.spec.ts

@@ -340,3 +340,13 @@ test('The reference links in the shared page should be accessible normally and c
     );
   }
 });
+
+test('Should show no permission page when the share page is not found', async ({
+  page,
+}) => {
+  await page.goto('http://localhost:8080/workspace/abc/123');
+
+  await expect(
+    page.getByText('You do not have access or this content does not exist.')
+  ).toBeVisible();
+});