FIX: fix send sd card with cloud issue

JIRA: STUDIO-9376 STUDIO-9419
1. Cancel sending during sending and then  resend failed
2. Optimization of prompt language after sending failure

Change-Id: I60bc4525b41cd4f803b811f0d1971bfed5cda0c5
(cherry picked from commit 92bd0cd18e4ea79b8b29f147e5ea09663837f7c0)

src/slic3r/GUI/Printer/PrinterFileSystem.h

@@ -169,6 +169,7 @@ public:
         std::unique_ptr<Upload> upload;
 
         bool IsUploading() const { return flags & FF_UPLOADING; }
+        ~UploadFile();
     };
 
     struct Void {};