fix: Optimize internationalization configuration #3221 (#9924)

### What problem does this PR solve?

fix: Optimize internationalization configuration

- Update multi-language options, adding general translations for
functions like Select All and Clear
- Add internationalization support for modules like Chat, Search, and
Datasets

### Type of change

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

web/src/pages/next-search/search-view.tsx

@@ -239,7 +239,7 @@ export default function SearchingView({
                 searchData.search_config.related_search && (
                   <div className="mt-14 w-full overflow-hidden opacity-100 max-h-96">
                     <p className="text-text-primary mb-2 text-xl">
-                      {t('relatedSearch')}
+                      {t('search.relatedSearch')}
                     </p>
                     <div className="mt-2 flex flex-wrap justify-start gap-2">
                       {relatedQuestions?.map((x, idx) => (