adding a [JsonProperty("name")] attribute for the Name property to ensure consistent JSON serialization

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: KoditkarVedant

Src/Notion.Client/Models/File/FIleInput/UploadedFileInput.cs

@@ -9,6 +9,7 @@ public class UploadedFileInput : IFileObjectInput
         [JsonProperty("file")]
         public Data File { get; set; }
 
+        [JsonProperty("name")]
         public string Name { get; set; }
 
         public IEnumerable<RichTextBaseInput> Caption { get; set; }