Fix ElementClickInterceptedError in test_update_status_fails_for_admin

The test injects a submit button into a table row to simulate an
unauthorized PATCH request, verifying the server returns 422. The
button was obscured by a full-row <a class="link"> overlay, causing
Selenium to throw ElementClickInterceptedError.

Since the test exercises server-side authorization rather than UI
behavior, switched to a JS click via execute_script to bypass the
visual interception check.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

test/system/users_test.rb

@@ -229,7 +229,7 @@ class UsersTest < ApplicationSystemTestCase
       user = User.find_by_email!(first(:link).text)
       inject_button_to first('td:not(.link)'), "update status", user_path(user), method: :patch,
         params: {user: {status: User.statuses.keys.sample}}, data: {turbo: false}
-      click_on "update status"
+      execute_script("arguments[0].click()", find_button("update status"))
     end
     assert_title 'The change you wanted was rejected (422)'
   end