[Enhancement]: error handling in fetchFileFromIPFS.ts

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Issue Description ✍️

## 📌 Issue Summary
On error, it only logs and returns undefined, so callers can't detect failures.
No HTTP status check; non-200 responses are treated as success.
JSON parsing errors aren't handled separately.
CandidateDescription.tsx sets undefined when the call fails.

## 💡 Suggestions
Check response.ok and throw on non-2xx.
Handle JSON parsing errors separately.
Throw meaningful errors so callers can handle them.
Remove the console.log.

### Record

- [x] I have synced all my node versions as mentioned in the project
- [x] I am using the same version of npm as is the project
- [x] My current branch is in sync with the development branch
- [x] I want to work on this issue