chore: Add span for measuring performance of consolidated api (#37328)

This PR adds spans for fetching consolidated api from client perspective

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Enhanced API call functionality with improved error handling and
response validation.
	- Added tracing for better observability during API interactions.

- **Bug Fixes**
- Refined error handling for specific scenarios, including unauthorized
access.

- **Documentation**
- Updated function signatures for better clarity on API response
handling.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/client/src/sagas/InitSagas.ts

@@ -240,11 +240,14 @@ export function* getInitResponses({
       shouldInitialiseUserDetails,
     );
 
+    const rootSpan = startRootSpan("fetch-consolidated-api");
     const initConsolidatedApiResponse: ApiResponse<InitConsolidatedApi> =
       yield mode === APP_MODE.EDIT
         ? ConsolidatedPageLoadApi.getConsolidatedPageLoadDataEdit(params)
         : ConsolidatedPageLoadApi.getConsolidatedPageLoadDataView(params);
 
+    endSpan(rootSpan);
+
     const isValidResponse: boolean = yield validateResponse(
       initConsolidatedApiResponse,
     );