feat: implement search functionality in connector popup

- Added a search input in the ConnectorDialogHeader to filter active connectors based on user input.
- Enhanced the ActiveConnectorsTab to filter displayed connectors and document types according to the search query.
- Introduced a clear search button for improved user experience when managing connectors.

surfsense_web/components/assistant-ui/connector-popup.tsx

@@ -292,6 +292,7 @@ export const ConnectorIndicator: FC = () => {
 									</TabsContent>
 
 									<ActiveConnectorsTab
+										searchQuery={searchQuery}
 										hasSources={hasSources}
 										totalSourceCount={totalSourceCount}
 										activeDocumentTypes={activeDocumentTypes}