Test: Verify selecting different graphs displays nodes in canvas

[Naseem77]

Title: verify selecting different graphs displays nodes in canvas

Preconditions: Browser is launched, and code graph home page is accessible.

Test Steps:

Navigate to the code graph home page.
Select different graphs using their respective options.
Verify that nodes appear in the canvas for each selected graph.

Expected Result: Nodes for the selected graph should display on the canvas.