fix(create): uploading file adds to the existing file list, dedupe file list

Closes #184

src/pages/create/index.tsx

@@ -301,7 +301,15 @@ export const CreatePage = () => {
 
   const handleSelectFiles = (event: React.ChangeEvent<HTMLInputElement>) => {
     if (event.target.files) {
-      setSelectedFiles(Array.from(event.target.files))
+      // Get the uploaded files
+      const files = Array.from(event.target.files)
+
+      // Remove duplicates based on the file.name
+      setSelectedFiles((p) =>
+        [...p, ...files].filter(
+          (file, i, array) => i === array.findIndex((t) => t.name === file.name)
+        )
+      )
     }
   }