[FIX]: Handle Error response from AI API

[VipinDevelops]

Linked Issue(s)

546

Acceptance Criteria fulfillment

• [x] Handle the AI API response in the backend, ensuring proper error handling.
• [x] Handle the BFF response for DORA metrics ensuring proper error feedback to the frontend.

Proposed changes (including videos or screenshots)

Screencast from 2024-09-15 11-54-08.webm

[e-for-eshaan]

@samad-yar-khan will submit the final review

[e-for-eshaan]

@VipinDevelops merge this then!