Allow Qt to use native file dialog to open (file, multiple files,
directory) and save a file.
Due to changes in file permission in Android 10, proper permissions
tokens are granted after selecting a file or directory.
[ChangeLog][Android] Use native file dialog by default for open and save
operations.
Task-number: QTBUG-82120
Fixes: QTBUG-75484
Change-Id: I92c9d08e0f214a57c4b3880fbd948adbabe39694
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>