Issue #3616544 by ckng: reordered build stage and promoted deepest leaves so exposed hierarchical facets show only their deepest results.

Chin Kiong Ngrequested to merge
issue/facets-3616544:3616544-show-only-deepest-level-items-exposed-filter into 3.0.x

Issue #3616544 by ckng: reordered build stage and promoted deepest leaves so exposed hierarchical facets show only their deepest results.

Closes #3616544

Merge request reports