Test: Verify "Clear graph" button resets canvas view

[Naseem77]

Title: verify clear graph button resets canvas view
Preconditions: Browser is launched, and code graph home page is accessible.

Test Steps:

Navigate to the code graph home page.
Select a graph.
Perform actions that show path to the canvas.
Click the clear graph button.
Verify that the canvas view resets to its original state.

Expected Result: Canvas is cleared, and the original graph view is restored.