Don't start ESL on app start in test build (EXPOSUREAPP-7946) (#3471)

* Enable ELS autologging in tester builds only if a specific package is installed.
This allows us to both disable it by default, but still have a way to log the initial app launch if necessary (or have it automatically enabled by just having the package installed).

* Fix tests, add more tests.

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>
Co-authored-by: BMItter <Berndus@gmx.de>
Co-authored-by: AlexanderAlferov <64849422+AlexanderAlferov@users.noreply.github.com>