Test: Validate consistent chat responses for repeated questions

[Naseem77]

Title: validate consistent ui responses for repeated questions in chat
Preconditions: Browser is launched, and code graph home page is accessible.

Test Steps:

Navigate to the code graph home page.
Select a graph.
Send the same question to the chat multiple times.
Record the UI responses for each iteration.
Verify that all UI responses are identical.

Expected Result: UI responses should be consistent for repeated questions in the chat.