Add Karma fuzz-testing for mixed API version components

[nolanlawson]

Add Karma tests that test what happens when you mix components of different API versions.

We can have a handful of these, using a random seed so that the tests are consistent.

The goal is to catch any unexpected bugs that may pop up when mixing components of different API versions.

[git2gus[bot]]

This issue has been linked to a new work item: W-16142438