* Avoid scheduling registry loads as tasks in tests
Since we patch out async_load in Store, these will not yield
to the event loop so it makes sense to await them instead
of creating tasks
This reduced my local test run times ~2.5% on average
* mock out save as well so we do not schedule tasks to save empty data
* tweaks
* fix lingering files
* another one
* too much for one PR, reduce
* fix targets
98d5f2fc01