Change default filter to trivial ComponentFilterMatchAll if user doesn't provide a Filter.
Change default filter to trivial ComponentFilterMatchAll if user doesn't provide a Filter.

opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core