Threading is broken when enabled

[Thaodan]

As the title says threading is broken when the plugin is enabled as the plugin overrides the symbols that are used for that as it seems.

My a snippet of my config:

(use-package gnus
  :config
  (setq gnus-thread-hide-subtree t)
  (setq gnus-thread-ignore-subject t
        gnus-article-sort-functions '(gnus-article-sort-by-number)
        gnus-thread-sort-functions  '(gnus-thread-sort-by-number
                                      gnus-thread-sort-by-date))
  ;; ;; En plus :  trier les threads en fonctions de la  date la plus récente
  (setq gnus-thread-sort-functions
        '(gnus-thread-sort-by-number gnus-thread-sort-by-most-recent-date))

  (setq gnus-subthread-sort-functions
        '(gnus-thread-sort-by-number gnus-thread-sort-by-date))
  (setq gnus-sort-gathered-threads-function 'gnus-thread-sort-by-date)

  ;; fancy summary
  (setq gnus-summary-line-format "%U|%R|%z|%ur|%(%-20&user-date;|%-30B%[%5L: %-40n%] %s%)\n")
  (setq gnus-summary-make-false-root 'dummy
        gnus-sum-thread-tree-false-root      "┈─►"
        gnus-sum-thread-tree-single-indent   "◈   "
        gnus-sum-thread-tree-root            "●   "
        gnus-sum-thread-tree-vertical        "│   "
        gnus-sum-thread-tree-leaf-with-other "├─►"
        gnus-sum-thread-tree-single-leaf     "╰─►"
        gnus-sum-thread-tree-indent          "    "))

(use-package all-the-icons-gnus
  :config
  (all-the-icons-gnus-setup))