fix wrong plurals implementation

- key was duplicated

- kotlin handling of plurals was missing

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

[skip ci]

app/src/main/java/com/nextcloud/talk/chat/ChatActivity.kt

@@ -1238,8 +1238,9 @@ class ChatActivity :
         val deleteNoticeText = binding.conversationDeleteNotice.findViewById<TextView>(R.id.deletion_message)
         viewThemeUtils.material.themeCardView(binding.conversationDeleteNotice)
 
-        deleteNoticeText.text = String.format(
-            resources.getString(R.string.nc_conversation_auto_delete_notice),
+        deleteNoticeText.text = resources.getQuantityString(
+            R.plurals.nc_conversation_auto_delete_info,
+            retentionPeriod,
             retentionPeriod
         )
         viewThemeUtils.material.colorMaterialButtonPrimaryTonal(

app/src/main/res/layout/remainder_to_delete_conversation.xml

@@ -19,7 +19,6 @@
         android:id="@+id/deletion_message"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="@string/nc_conversation_auto_delete_notice"
         android:textSize="14sp"
         android:lineSpacingExtra="4dp"
         android:gravity="center"