[gnome-shell] appDisplay: Look up directory- instead of category translations

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 3fac0632a8fdb78a7082dd403cbf27dd62ed91b7
Author: Florian Müllner <fmuellner gnome org>
Date:   Sun Apr 12 17:15:48 2020 +0200

    appDisplay: Look up directory- instead of category translations
    
    Translations are provided by .directory files, so trying to look
    up a category name without the suffix will always fail.
    
    Commit 343b3351f1 tried to fix this previously by changing the
    saved keys, but that broke existing translatable folders.
    
    Appending the .directory suffix for the lookup instead fixes the
    issue without regressing non-custom folders.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2623

 js/ui/appDisplay.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 99c052b793..08febc4915 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -115,7 +115,8 @@ function _findBestFolderName(apps) {
     }, commonCategories);
 
     for (let category of commonCategories) {
-        let translated = Shell.util_get_translated_folder_name(category);
+        const directory = '%s.directory'.format(category);
+        const translated = Shell.util_get_translated_folder_name(directory);
         if (translated !== null)
             return translated;
     }