TypeError when browsing the worker activities of a process that uses worker configurations

1. Create a process.

2. Add some worker runs that have some worker configurations.

3. Start it with worker activities enabled.

4. Wait for the activities to be initialized.

5. Click on the Workers activity button.

6. Get one error notification per worker configuration:

   An error occurred retrieving configuration "686e3470-7967-4d6a-bc0e-04f871732109": can't access property "686e3470-7967-4d6a-bc0e-04f871732109", this.workerConfigurations[e] is undefined

7. Cry.

This only occurs on the corpus and process worker activities page because those are the only remaining pages where the Worker/Version/Details.vue component has its configurationId property set.