[libaccounts-qt] Add 0001-Fix-GError-crash-under-Manager-account.patch

This crash has appeared in msyncd, after assertion failures like:

Nov 12 15:46:36 localhost invoker[968]: (process:967): accounts-glib-CRITICAL **: ag_manager_load_account: assertion `account_id != 0' failed
Nov 12 15:46:36 localhost [967]: GLIB CRITICAL ** accounts-glib - ag_manager_load_account: assertion `account_id != 0' failed

The cause of those is still unknown (and outside of libaccounts-qt), but we should be robust to them anyway.