Co-authored-by: Liam <byteslice@airmail.cc>

Co-authored-by: Liam <byteslice@airmail.cc>

Sometimes when we want to change the current setup page, the current view isn't available and we try to alter the current view. This adds a guard to prevent that issue.

Sometimes during onSaveInstanceState, the SetupFragment would crash the app in the background if we tried to store the state of a view.

Previously the config file wasn't being recreated when resetting all settings. Now just call into native code to recreate the settings file and reload all defaults.

The dialog would previously dismiss immediately when it should stay alive until the task is cancelled completely.

The C++ side never made the filename lowercase when checking the extension. This just passes the pre-prepared extension to have it checked.

This also allows save imports to happen without starting a game at first.

This was mysteriously missing, likely from when I ported Citra fixes
semi-recently.

Using the "bottom" attribute would break the navigation view and prevent things like rounded corners and lock modes from being applied properly.

Even after updating the androidx window library, this did not fix the issue for all devices. This ensures that the measured size of the overlay will be used instead of a potentially larger one seen by androidx.