Keep the old test_diffusers id around to prevent broken plugins

ui/index.html

@@ -815,6 +815,7 @@
             <p>This license of this software forbids you from sharing any content that violates any laws, produce any harm to a person, disseminate any personal information that would be meant for harm, <br/>spread misinformation and target vulnerable groups. For the full list of restrictions please read <a href="https://github.com/easydiffusion/easydiffusion/blob/main/LICENSE" target="_blank">the license</a>.</p>
             <p>By using this software, you consent to the terms and conditions of the license.</p>
         </div>
+        <input id="test_diffusers" type="checkbox" style="display: none" checked />
     </div>
 </div>
 </body>

ui/media/js/parameters.js

@@ -469,6 +469,7 @@ async function getAppConfig() {
             testDiffusersEnabled = false
         }
         testDiffusers.checked = testDiffusersEnabled
+        document.querySelector("#test_diffusers").checked = testDiffusers.checked // don't break plugins
 
         if (config.config_on_startup) {
             if (config.config_on_startup?.use_v3_engine) {