fix(#2415): disambiguate highlight groups, see :help nvim-tree-highlight-overhaul (#2639)
* fix(#2415): disambiguate highlight groups, see :help nvim-tree-highlight-overhaul
* fix(#2415): disambiguate highlight groups, see :help nvim-tree-highlight-overhaul
* fix(#2415): disambiguate highlight groups, see :help nvim-tree-highlight-overhaul
* fix(#2415): disambiguate highlight groups, see :help nvim-tree-highlight-overhaul
* fix(#2415): disambiguate highlight groups, see :help nvim-tree-highlight-overhaul
* fix(#2415): disambiguate highlight groups, see :help nvim-tree-highlight-overhaul
* fix(#2415): disambiguate highlight groups, see :help nvim-tree-highlight-overhaul