8573fee2e6
Summary of updates: - the "sensitive data" checkbox to toggle backup encryption is no longer displayed when a user turns off scheduled backups - the "Change password" button, which only appears for encrypted backups, is now aligned with the checkbox + description to match the Figma spec - once scheduled backups are turned off, the latest backup file is deleted via the `BackupService.deleteLastBackup()` method Tests - moved browser tests related to the turn-off scheduled backups dialog from `backup_settings.js` to their own file `browser_settings_turn_off_scheduled_backups.js` - updated some browser tasks testing add/change password to have scheduled backups enabled by default - added a chrome test for the sensitive data checkbox's visibility whenever scheduled backups are toggled on or off Depends on https://phabricator.services.mozilla.com/D215543 Differential Revision: https://phabricator.services.mozilla.com/D215826