When onActivatedTabHandler is fired with no tabId an exception is thrown

[totallymike]

If we haven't hardcoded a container icon into this addon, the addon will throw an exception and fail.

[totallymike]

Actually this is incorrect. I made an assumption without validating it :)

What happens is that if you create a container via Multi-Account Containers, the new container is detected by the handler, but when onActivatedTabHandler is fired, there is no tabId, it fails to destructure.