When filtering we want all to preload all the ancestors upto the specified
parent group.
- root
- subgroup
- nested-group
- project
So when searching 'project', on the 'subgroup' page we want to preload
'nested-group' but not 'subgroup' or 'root'
By preloading the count of members, projects and subgroups of a group,
we don't need to query them later.
We also preload the entire hierarchy for a search result and include
the counts so we don't need to query for them again
