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/agent/index.tsx

@@ -114,7 +114,7 @@ export default function Agent() {
             <BreadcrumbList>
               <BreadcrumbItem>
                 <BreadcrumbLink onClick={navigateToAgents}>
-                  Agent
+                  {t('header.flow')}
                 </BreadcrumbLink>
               </BreadcrumbItem>
               <BreadcrumbSeparator />