feat: If the model is not set, a pop-up window will remind the user #2295 (#2574)

### What problem does this PR solve?

feat: If the model is not set, a pop-up window will remind the user
#2295

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

web/src/locales/en.ts

@@ -27,6 +27,7 @@ export default {
       close: 'Close',
       preview: 'Preview',
       move: 'Move',
+      warn: '提醒',
     },
     login: {
       login: 'Sign in',
@@ -578,6 +579,8 @@ The above is the content you need to summarize.`,
         'Please input Google Cloud Service Account Key in base64 format',
       addGoogleRegion: 'Google Cloud Region',
       GoogleRegionMessage: 'Please input Google Cloud Region',
+      modelProvidersWarn:
+        'Please add both embedding model and LLM in <b>Settings > Model</b> providers firstly.',
     },
     message: {
       registered: 'Registered!',