Description

The integration test TestTaskResize is not actually testing anything.

Since the test does not actually even allocate a terminal all it's really doing is ensuring that the shim doesn't return an error when there is no terminal.

Steps to reproduce the issue

N/A

Describe the results you received and expected

We should have a test that handles a couple of different scenarios.
I would actually expect the test to fail in its current form but the runc shim explicitly returns nil when there is no tty instead of something like ErrInvalidArgument.

This is a little tricky to do because we need tests for both Windows and Linux which will be very different in implementation.

What version of containerd are you using?

N/A

Any other relevant information

No response

Show configuration if it is related to CRI plugin.

No response