The app content may disappear after rotating on an emulator where a big document is open

[mkulesh]

Follow-up issue after #136:
After rotating an emulator where square_wave_oscillator example is open, the content disappears and app is not more usable.

Analysis: in the onCreate method, also check whether the input bundle is empty:

instanceStateEmpty = savedInstanceState == null || savedInstanceState.isEmpty();

instead of

instanceStateEmpty = savedInstanceState == null;

Note: this problem is only observed on an Android 14 emulator, not on a real device.

[mkulesh]

Released in version 1.24.