chore(samples-android): Adapt SQLite demo screen to SAGP build mode (#5568)

Exposes a `BuildConfig.USE_SAGP` property from the recently introduced -PuseSagp flag ([#5538](https://github.com/getsentry/sentry-java/pull/5538)).

Lets us update the SQLite screen in the Android sample app so that it swizzles between auto-instrumenting vs manually wrapping `SQLiteDriver`, depending on the whether SAGP was applied to the build.