waylandloginmanager: allow the filter to pass the first 3 commands instead of just 1 in case if a session registers within .1 seconds of the user trying to do something else. Unlikley, but it may happen.

git-svn-id: https://rebeccablackos.svn.sourceforge.net/svnroot/rebeccablackos@2970 56e3d1a8-0179-4092-b3e2-9fbbcda0c0a9