* refactor(sidecar): drop IosDriverBackend
* refactor(sidecar): route ios platform off the iOS backend
* chore(sidecar): remove maestro ios dependencies
* feat(testrun): reject physical iOS with a clear message
* refactor(sidecar): drop iOS hierarchy helpers and their test
* build(sidecar): strip iOS runner bundles and classes from the fat jar
* test(testrun): cover physical-iOS rejection