Tabs should detect if WebGL is disabled

[yockcheng]

Attempt to run code in playground for Studio 3 In-Class Studio Sheet causes website to crash.

[RichDom2185]

Not a bug. Please enable WebGL in the browser.

[martin-henz]

But should the frontend crash? Any way to check if webgl is enabled?

[RichDom2185]

But should the frontend crash? Any way to check if webgl is enabled?

I don't think it should be handled by frontend. Should be handled by modules, since that's what's causing the render to fail

[RichDom2185]

i.e., the tab should render the error message