Fix: Proper HTTP Status Code Usage for Authentication and Authorization Errors

[yadavshubham01]

This PR ensures the correct usage of HTTP status codes (401 Unauthorized and 403 Forbidden) for authentication and authorization errors, aligning with standard HTTP semantics. The changes impact the handling of AuthException across the application.

Changes Implemented
Updated Exception Handling Logic:

401 Unauthorized: Now used for cases where the user is unauthenticated (e.g., missing JWT, expired JWT, invalid credentials).
403 Forbidden: Used strictly for cases where the user is authenticated but lacks the required permissions.
2. Affected Files:
before :-

After:-

3. Frontend Impact:

Verified frontend token renewal and error-handling flows.
Updated logic for handling 401 responses to trigger re-authentication (e.g., token refresh or redirect to login).

4.Issue Resolved: #9347

[yadavshubham01]

hey @FelixMalfait preview this pull request

[prastoin]

Hello @yadavshubham01, your PR description says

Updated logic for handling 401 responses to trigger re-authentication (e.g., token refresh or redirect to login).

But unless I'm mistaken I can't find no diff on the front package ? Maybe an oversight ?
Please let me know

[charlesBochet]

I have tested the PR locally with short access token and refresh token expirations and the FE is still behaving as expected.
Merging this one, thank you @yadavshubham01

[github-actions]

	Fails
🚫	node failed.

Log

�[31mError: �[39m SyntaxError: Unexpected token C in JSON at position 0
    at JSON.parse (<anonymous>)
�[90m    at parseJSONFromBytes (node:internal/deps/undici/undici:5584:19)�[39m
�[90m    at successSteps (node:internal/deps/undici/undici:5555:27)�[39m
�[90m    at fullyReadBody (node:internal/deps/undici/undici:1665:9)�[39m
�[90m    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)�[39m
�[90m    at async specConsumeBody (node:internal/deps/undici/undici:5564:7)�[39m
danger-results://tmp/danger-results-07531200.json

Generated by 🚫 dangerJS against d5547e4