[FR]: Make emulators start faster on CI

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Describe the problem

From https://github.com/android/nowinandroid/pull/1019

The reactivecircus action seems to be downloading and installing a lot of stuff that should already be present in macos-latest. https://github.com/ReactiveCircus/android-emulator-runner/issues/265

For example, the command `[command]/bin/sh -c \sdkmanager --install system-images;android-26;default;x86_64' --channel=0 > /dev/null`

takes 53 seconds to run.

### Describe the solution

TBD

### Additional context

_No response_

### Code of Conduct

- [X] I agree to follow this project's Code of Conduct

Start by reviewing the CI workflow that invokes the ReactiveCircus Android emulator runner and the linked pull request #1019, then compare its sdkmanager installs with macos-latest's available packages. Done means emulator startup no longer downloads packages that are already available and CI still runs successfully.

Written by the indexing model from the issue text.