[feat] sfpegListCmp - Properly support filtering in treeGrid display mode

[pegros]

Is your feature request related to a problem? Please describe. When in treeGrid display mode, filtering only works on the first level of nodes displayed. It would be great to filter the whole hierarchy.

Describe the solution you'd like It would be great to filter the whole hierarchy, displaying only parents of children meeting the search criteria.

Describe alternatives you've considered The treeGrid display mode faces currently multiple restrictions as most features were initially designed for lists. Such a feature requires a rework of the filtering logic in a tree instead of list mode. A separate filter function would be preferable to limit regressions on lists.

Additional context N/A