This also unifies the "icon picker" screen with the new "add mode" screen since in both cases we want to edit name and icon together (and not save updates until the user confirms). Bug: 326442408 Bug: 346278854 Test: atest com.android.settings.notification.modes Flag: android.app.modes_ui Change-Id: I8a9d07ba0b6c55f3abc1b9884f278d51d178dc83