Fix: Fixed the styling and logic issues on the model provider page #10703 (#10909)

### What problem does this PR solve?

Fix: Fixed the styling and logic issues on the model provider page

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/utils/api.ts

@@ -31,6 +31,7 @@ export default {
   set_api_key: `${api_host}/llm/set_api_key`,
   add_llm: `${api_host}/llm/add_llm`,
   delete_llm: `${api_host}/llm/delete_llm`,
+  enable_llm: `${api_host}/llm/enable_llm`,
   deleteFactory: `${api_host}/llm/delete_factory`,
 
   // plugin