Deck options' "Discard changes?" dialog should be closed by tapping outside on AnkiDroid

[ZornHadNoChoice]

On AnkiDroid, we should be able to tap outside this dialog to dismiss it.

[abdo]

For reference, looks like an AnkiDroid-specific fix can be implemented here: Anki-Android/AnkiDroid/src/main/java/com/ichi2/anki/pages/PageChromeClient.kt at 6c63491a16006c7c6ac5f2642a193cf743e67a95 · ankidroid/Anki-Android · GitHub

See https://stackoverflow.com/a/8392343