We are currently defaulting to targetSdk=1 as no targetSdk is specified. Only
tests which explicitly ask for another SDK use another test SDK. With the
versioned manifest, all tests run using the targetSDK by default.
PiperOrigin-RevId: 249060796
This replaces the deprecated usages of RobolectricTestRunner and
RuntimeEnvironent and fully migrates the tests to androidx.
PiperOrigin-RevId: 238011667