macos12 is deprecated on github actions

…#61)

Changes:
1. Ensures the runloop is fully flushed before continuing
2. Force enables the accessibility engine and waits for it to load if it
is the first time loading on a device
3. Improve detection for view did appear to hopefully detect when the
window's root view controller has completed appearance better and reduce
issues from slow sim boot
4. Check for unfinished animations with the assumption that we can use
those for transitions.
5. Adds a new settings object to be able to configure some of these
options