Revert "Always use path__overlap to go through the GIN index in ListElementChildren"
Reverts !2014 (merged) / #1521 (closed), a temporary fix to get a client demo to work in a panic. The actual fix was made in !2020 (merged).
Reverts !2014 (merged) / #1521 (closed), a temporary fix to get a client demo to work in a panic. The actual fix was made in !2020 (merged).