[mob] Fix bad translation (#4911)

## Description

## Tests

mobile/lib/generated/intl/messages_pl.dart

@@ -249,8 +249,7 @@ class MessageLookup extends MessageLookupByLibrary {
   static String m82(ignoreReason) =>
       "Przesyłanie jest ignorowane z powodu ${ignoreReason}";
 
-  static String m83(count) =>
-      "${Intl.plural(count, one: 'Zachowywanie ${count} wspomnienia...', few: 'Zachowywanie ${count} wspomnienia...', many: 'Zachowywanie ${count} wspomnień...', other: 'Zachowywanie ${count} wspomnień...')}";
+  static String m83(count) => "Zachowywanie ${count} wspomnień...";
 
   static String m84(endDate) => "Ważne do ${endDate}";
 

mobile/lib/generated/l10n.dart

@@ -6811,11 +6811,11 @@ class S {
   }
 
   /// `Preserving {count} memories...`
-  String uploadingMultipleMemories(Object count) {
+  String uploadingMultipleMemories(String count) {
     return Intl.message(
       'Preserving $count memories...',
       name: 'uploadingMultipleMemories',
-      desc: '',
+      desc: 'Text to tell user how many memories are being preserved',
       args: [count],
     );
   }

mobile/lib/l10n/intl_en.arb

@@ -965,6 +965,14 @@
   "syncStopped": "Sync stopped",
   "syncProgress": "{completed}/{total} memories preserved",
   "uploadingMultipleMemories": "Preserving {count} memories...",
+  "@uploadingMultipleMemories": {
+    "description": "Text to tell user how many memories are being preserved",
+    "placeholders": {
+      "count": {
+        "type": "String"
+      }
+    }
+  },
   "uploadingSingleMemory": "Preserving 1 memory...",
   "@syncProgress": {
     "description": "Text to tell user how many memories have been preserved",

mobile/lib/l10n/intl_pl.arb

@@ -959,7 +959,7 @@
   "encryptingBackup": "Szyfrowanie kopii zapasowej...",
   "syncStopped": "Synchronizacja zatrzymana",
   "syncProgress": "Zachowano {completed}/{total} wspomnień",
-  "uploadingMultipleMemories": "{count, plural, one{Zachowywanie {count} wspomnienia...} few {Zachowywanie {count} wspomnienia...} many {Zachowywanie {count} wspomnień...} other{Zachowywanie {count} wspomnień...}}",
+  "uploadingMultipleMemories": "Zachowywanie {count} wspomnień...",
   "uploadingSingleMemory": "Zachowywanie 1 wspomnienia...",
   "@syncProgress": {
     "description": "Text to tell user how many memories have been preserved",