IssueTracker

A setter for https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:work/work-testing/src/main/java/androidx/work/testing/TestListenableWorkerBuilder.java;l=104;drc=92f51c17f5429393d02e809b9cdfa3078ef09367

I am using TestListenableWorkerBuilder to test the behavior of a custom WorkerFactory. Part of the WorkerFactory API is that it allows a different class type to be returned than was requested in the parameters, however, TestListenableWorkerBuilder [asserts that they are assignable](https://source.corp.google.com/h/android/platform/frameworks/support/+/androidx-main:work/work-testing/src/main/java/androidx/work/testing/TestListenableWorkerBuilder.java;l=327;drc=92f51c17f5429393d02e809b9cdfa3078ef09367).

I'd like to be able to set the workerName, so that it may differ from the WorkerBuilder class type. The built class will match the WorkerBuilder type.