FileManager: Switch FileOperationProgressWidget::did_error() to SV&

Author: https://github.com/AtkinsSJ
Commit: 9ac757647f
Pull-request: https://github.com/SerenityOS/serenity/pull/8117
Reviewed-by: https://github.com/MaxWipfli ✅

Userland/Applications/FileManager/FileOperationProgressWidget.h

@@ -22,7 +22,7 @@ private:
     FileOperationProgressWidget(FileOperation, NonnullRefPtr<Core::File> helper_pipe);
 
     void did_finish();
-    void did_error(String message);
+    void did_error(StringView const& message);
     void did_progress(off_t bytes_done, off_t total_byte_count, size_t files_done, size_t total_file_count, off_t current_file_done, off_t current_file_size, StringView const& current_filename);
 
     void close_pipe();