TF-3461 Update sort size title

Signed-off-by: dab246 <tdvu@linagora.com>

lib/l10n/intl_messages.arb

@@ -4298,13 +4298,13 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "sizeDescending": "Size: Big - Small",
+  "sizeDescending": "Size descending",
   "@sizeDescending": {
     "type": "text",
     "placeholders_order": [],
     "placeholders": {}
   },
-  "sizeAscending": "Size: Small - Big",
+  "sizeAscending": "Size ascending",
   "@sizeAscending": {
     "type": "text",
     "placeholders_order": [],

lib/main/localizations/app_localizations.dart

@@ -4509,14 +4509,14 @@ class AppLocalizations {
 
   String get sizeDescending {
     return Intl.message(
-      'Size: Big - Small',
+      'Size descending',
       name: 'sizeDescending',
     );
   }
 
   String get sizeAscending {
     return Intl.message(
-      'Size: Small - Big',
+      'Size ascending',
       name: 'sizeAscending',
     );
   }