feat(search): Added app embedding functionality and optimized search page #3221 (#9499)

### What problem does this PR solve?
feat(search): Added app embedding functionality and optimized search
page #3221

- Added an Embed App button and related functionality
- Optimized the layout and interaction of the search settings interface
- Adjusted the search result display method
- Refactored some code to support new features
### Type of change

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

web/src/locales/en.ts

@@ -1418,6 +1418,7 @@ This delimiter is used to split the input text into several text pieces echo of
     },
     search: {
       createSearch: 'Create Search',
+      searchGreeting: 'How can I help you today ？',
     },
   },
 };