Add test for NonRetryableErrors

[rylandg]

As of today there are no integration level tests for NewNonRetryableApplicationError. This is a problem because we reference the feature in our docs and its a bit hard to find any info on it. '

We do have a test which specifies non-retryable errors: https://github.com/temporalio/sdk-go/blob/06e1ca56f3a286e072a048576b5e372ea0a497d6/internal/internal_workflow_testsuite_test.go#L2456

But seems to do so incorrectly:

https://github.com/temporalio/sdk-go/blob/06e1ca56f3a286e072a048576b5e372ea0a497d6/internal/internal_workflow_testsuite_test.go#L2359

[robholland]

I think this was filed on the wrong repo?