## Problem To Solve In deeply nested group/subgroup/project hierarchies, labels inherited from ancestors do not show up a deeply nested project's label list. This is confusing and it also prevents those projects from setting inherited labels to priority labels. ## Solution Show all inherited labels within a given subgroup or project label list. The backend changes are behind the feature flag `show_inherited_labels`, which has been defaulted to on (https://gitlab.com/gitlab-org/gitlab/-/merge_requests/45161). ## Acceptance - [x] All inherited labels are visible in a subgroup or project (even those that are deeply nested) - [x] Some visual indication that denotes from where the label was inherited. - [x] Tests -- especially for the deeply nested projects and subgroups as this seems to be a common problem with other features that have similar inheritance behavior.