Don't let magit-gitflow mode overwrite C-f key binding. (#13973)

* Don't let magit-gitflow mode overwrite `C-f` key binding.

* Describe changes in CHANGELOG.develop

CHANGELOG.develop

@@ -1978,6 +1978,7 @@ Other:
     - ~SPC g l P~ adds region permalink URL to clipboard
   - Moved =magit-find-file= to view a file at a specific branch or commit
     from ~SPC g f f~ to ~SPC g f F~ (thanks to duianto and Hong Xu)
+  - Unbind ~C-f~ from =magit-gitflow-popup= (thanks to rayw000)
 - Fixes:
   - Install magit-svn by default and activate with git-enable-magit-svn-plugin
   - Added feature to toggle =evil-magit= based on editing style

layers/+source-control/git/packages.el

@@ -254,7 +254,9 @@
 (defun git/init-magit-gitflow ()
   (use-package magit-gitflow
     :defer t
-    :init (add-hook 'magit-mode-hook 'turn-on-magit-gitflow)
+    :init (progn
+            (add-hook 'magit-mode-hook 'turn-on-magit-gitflow)
+            (setq magit-gitflow-popup-key "%"))
     :config
     (progn
       (spacemacs|diminish magit-gitflow-mode "Flow")